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Contents

000 - 099.M41

Year Event Source
019.M41 Far eastern rim of the Galaxy assaulted by an Ork Waaagh! [Needs Citation]
Two High Lords of Terra assassinated. [Needs Citation]
Saint Drache martyred on Korynth. [Needs Citation]
Billions die due to famine on Beznos. [Needs Citation]
The infamous heretic Pontius Glaw is first touched by the Warp. Malleus (Novel) by Dan Abnett, [Needs Citation]
050.M41 Clan Raukaan, Clan Avernii, Clan Dorrvok, and Clan Garrsak of the Iron Hands Chapter assault an Eldar dig site on Dawkbreak. After destroying the Craftworld Alaitoc force protecting the site, they claim the relics for themselves and abandon the planet and its defenders, the 17th Catachan Army Group, to Eldar reprisals. Clan Raukaan - A Codex: Space Marines Supplement (6th Edition)
085.M41 By request of Inquisitor Scallen, Sisters of Battle of the Order of the Valorous Heart purge Hive Tumulus (on planet Farglum) of the Cult Epicurian. Chapter Approved 2001, [Needs Citation]

100 - 199.M41

Year Event Source
123.M41 Clan Raukaan of the Iron Hands defeat a group of Dark Eldar slavers in the Hundharr Cluster by using a number of civilian workers as bait for a trap. Clan Raukaan - A Codex: Space Marines Supplement (6th Edition)
139.M41 Abaddon the Despoiler's forces complete construction of the Planet Killer in the Eye of Terror. [Needs Citation]
139-160.M41 Abaddon uses the Planet Killer to lead the 12th Black Crusade that ravages the Gothic Sector, known later as the Gothic War. [Needs Citation]
143.M41 The Jorun Retaliation. The Howling Griffons, Ultramarines and Sons of Orar Chapters defeat the Cabal of the Crimson Libation and their ex-Imperial Guard slaves. Chaplain Armand Titus of the Howling Griffons is interred within a Dreadnought sarcophagus after succumbing to the Xenos poisons. Imperial Armour Volume Nine - The Badab War - Part One, pp. 126-127
154.M41 The Planet Killer is finally destroyed. No traces of the remains are found by Inquisitor Horst's investigation 2 years later. [Needs Citation]
179.M41 Rogue trader Veronique Renuka is declared an outlaw for her involvement in a coup attempt on Cyclopia. Rogue Trader Core Rulebook pg. 362
189.M41 Eternal Praetorian is lost with all hands while searching for a stable route into the Koronus Expanse. Rogue Trader: Into the Storm pg. 165

200 - 299.M41

Year Event Source
201.M41 The genocidal madman Kobras Aquairre, last of the Aquairre rogue traders, disappears into the Rifts of Hecaton. Rogue Trader Core Rulebook pg. 362
211.M41 A Meritech Clan raid on a trio of Battlefleet Calixis Sword-class frigates triggers a fifteen-year war that ends with the destruction of Meritech clan strongholds. Rogue Trader: Battlefleet Koronus pgs. 28, 56
213.M41 Warlord Skarmork's Orks invade Castaburg. The Death Korps of Krieg counterattack. [Needs Citation]
220.M41 Explorator Fleet Hydrax-Lamda-15 discovers an Ork Terror Ship adrift in space. The ship is devoid of life, but contains the corpses of hundreds of Orks. A standard bearing the words 'Carcharodon Astra' is found atop a mound of bodies several metres high. Imperial Armour Volume Ten - The Badab War - Part Two, pp. 118-119
241.M41 The Helican subsector capital is moved to Thracian Primaris from Gudrun when it overtakes the latter as the preeminent world of the subsector. Malleus (Novel) - Eisenhorn (Omnibus) by Dan Abnett,
Chapter Two, pg. 289
248.M41 Asdrubael Vect seals the daemon-summoning Dark Eldar Archon Ysclyth into his own territory. The daemons tear apart Ysclyth and his kabal. Codex: Chaos Daemons (6th Edition) pg. 22
249.M41 The Forge World Columnus is assaulted by the Ork Weirdwaaagh! led by the Weirdboy Zagdakka. Iron Hands Clan Raukaan, a Raven Guard Shadow Company, and the entire Legio Ferrax Titan Legion are among the defenders. The Orks are defeated and Zagdakka killed, though at the cost of the entire Raven Guards company and Shadow Captain Stenn, who were used as bait for the Ork Warlord and allowed to die by Warleader Kristos. Clan Raukaan - A Codex: Space Marines Supplement (6th Edition)
260.M41 As a result of Warleader Kristos' actions on Columnus, seen to be not of logic but the settling of a score with the Raven Guard, the Kristosian Conclave is called on Medusa to debate his actions there, but the conclave expands to become a general debate on the chapter's philosophy. During the 200 years of the conclave, no Iron Father is elected to lead the Iron Council. Clan Raukaan - A Codex: Space Marines Supplement (6th Edition)
261.M41 The first Falchion-class frigate is laid down at the Voss forge world. Rogue Trader: Battlefleet Koronus pg. 26
273.M41 Hydra Flak Tank found. Imperial Armour Volume One - Imperial Guard and Imperial Navy, [Needs Citation]
298.M41 Rogue trader Salgut Falkin ferries thirty thousand surplus hive workers from Clove in the Calixis Sector to an uninhabited world. He remains long enough to see their prefabricated habs deployed. Rogue Trader Core Rulebook pg. 326

300 - 399.M41

Year Event Source
310.M41 Rogue trader Salgut Falkin returns to the colony world he founded after a series of unfortunate encounters with the eldar. He finds a thriving community calling itself New Clove and installs himself as Imperial commander. An eldar fleet follows him and ejects the colonists from their Maiden World. Falkin and the remainder of his flotilla disappear into the Koronus Expanse. Rogue Trader Core Rulebook pg. 326
322.M41 The Golden Halos Space Marine Chapter encounters the infamous "ghost ship" Celestion while aboard the Battlecruiser Garandus. The result is a severe glancing collision upon the lower port bow, ripping apart several of the chapter's dropships. A surprise warp vortex halts all recovery operations. Casualties were listed as 2,362, 17% from the Golden Halos Chapter. Inferno Issue 11, [Needs Citation]
342.M41 Inquisitor Eisenhorn declares Inquisitor Quixos a heretic and Extremis Diabolus. Eisenhorn leads a cell that hunts down and kills Quixos three years later (Quixos approx. 300 years old at this point). Malleus (Novel) by Dan Abnett, [Needs Citation]
359.M41 Copul IV cleansed by the Ultramarines. [Needs Citation]
367.M41 A joint Space Marine and Imperial Guard force led by Marneus Calgar scours the Ork world of Balur. [Needs Citation]
371.M41 Sergeant Severus of the Ultramarines is wounded on Corinth and interred in a Dreadnought. He returns for the seven-year Corinthian Crusade in 698.M41. [Needs Citation]
373.M41 Inquisitors murdered. Jaq Draco raids the Black Library of Chaos. Planet Sabulorb incinerated. Jaq Draco killed in the Eldar Webway. Harlequin (Novel) by Ian Watson, [Needs Citation]; Chaos Child (Novel) by Ian Watson, [Needs Citation]
383.M41 Warp storm Iagon affects Lissandro. The governing body, the Quorum Immaculate, has the population implanted with electoos bearing hexagrammatic wards against daemonic possession. The arrival of the Black Ships triggers the false wards and the population is transformed into Pink Horrors. By the time the Grey Knights arrive, the entire population is either dead or converted. The Grey Knights witness the disappearance of the Blue Scribes and discover that the symbol was one of invitation, not banishment. Codex: Chaos Daemons (6th Edition) pg. 22
385.M41 Following the deaths of the Seventeen Holy Martyrs, Lord Inquisitor Heydrich Tarlemon orders the Calixis Sector Ordo Malleus to collate all their records of daemonic names and activities. Dark Heresy: Daemon Hunter pg. 74
388.M41 Fenton Kail is assassinated days after declaring his discovery of an intact Standard Template Construct. Rogue Trader Core Rulebook pg. 362
392.M41 Macharian Crusade begins, led by Lord Commander Solar Macharius. Nearly one thousand worlds brought into the Imperium in the Segmentum Pacificus. A seven year Crusade ending with Lord Commander Solar Macharius' death and causing the Macharian Heresy. White Dwarf 240 pgs. 32-33, Codex: Dark Angels (6th Edition) pg. 36-38

400 - 499.M41

Year Event Source
405.M41 The Dark Angels suppress civil wars during the Macharian Heresy. The Ravenwing uncovers cults and signs of Cypher's presence. An encounter with the Space Wolves allows several Fallen Angels to escape during the Lythanos Uprisings. Codex: Dark Angels (6th Edition) pg. 25
422-424.M41 Waaagh! Gulgrog lays siege to Port Wander. Two-thirds of Battlefleet Calixis responds to the attack, led by Admiral Androvast Strophes. Fist of Adamant cripples the ork flagship and routs the invasion. The Imperial Navy reclaims Port Wander instead of pursuing the orks into the Maw. The orks of the Koronus Expanse remain a minor threat for the next four centuries. Rogue Trader: Edge of the Abyss pg. 51
443.M41 The Inquisition has Lord-Captain Balastus Irem and his family wiped out for dealing in xenotech excavated from the Cineris Malificum, including Halo Devices. Rogue Trader Core Rulebook pgs. 281, 361-362
444.M41 First War for Armageddon. Chaos incursion led by Angron and World Eaters beaten back by Space Wolves and Grey Knights. Codex: Chaos Space Marines (3rd Edition, 2nd Codex), pg. 8; Codex: Chaos Space Marines (6th Edition) pg. 24
450-465.M41 Inquisitor Hesten compiles the Hesten manuscript, which documents principles of the God Incarnate (Thorian doctrine). [Needs Citation]
452.M41 The Order of the Bleeding Heart, entrusted with the bones of Saint Emiline, evacuates the Shrine World of Emiline's Hope when an Ork Waaagh! under the command of the Arch Maniac of Calvera invades the Yerena System. [Needs Citation]
454.M41 Lammas Campaign underway, Valstadt 13th Armoured Regiment fighting. [Needs Citation]
474.M41 Armageddon riots. Warp storms cut off Armageddon. Food shortages lead to armed rebellion in a dozen hives. [Needs Citation]
498.M41 Parsimus Dewain, last of the Dewain rogue traders, dies without an heir. Rogue Trader Core Rulebook pg. 362

500 - 599.M41

Year Event Source
500.M41 Across the Imperium there are visions of the Emperor's tears. From the poorest urchin to the mightiest Chapter Master, all who see the visions know that the Emperor weeps not for himself, but for all mankind. Warhammer 40,000 6th Edition Rulebook, pg.171
Liege Tarn Marvolus of Footfall is quartered after attempting to extort tribute from rogue trader Cassilus. Rogue Trader: Hostile Acquisitions pgs. 18-19
528.M41 A sub-fleet of the Disciples of Thule under Magos Solus Kanceme enters the Koronus Expanse and scatters in search of pre-Imperial artefacts. Rogue Trader Core Rulebook pg. 359
538.M41 The Prefect Majoris of the mining world Dlathus in the Hazeroth Abyss mistakes rogue trader Lady Sun Lee for a representative of the Adeptus Terra and releases his world's Imperial tithe to her. He disappears before the official tithe collectors arrive the next year. Ibid. pg. 328

600 - 699.M41

Year Event Source
609.M41 The Bloodwrath Incident. A transport ship carrying the 92nd Brontian Longknives Imperial Guard regiment, three years overdue after leaving Dwinlicht, translates into realspace near Port Wander. Initial investigation brings the boarding party into contact with daemons of Khorne. Inquisitors of the Ordo Malleus board the ship to fight the incursion and find its source. The Inquisitors fight a Bloodthirster in the central cargo bay, but the ship is destroyed when it passes within one million kilometres of Port Wander. Dark Heresy: Daemon Hunter pgs. 18-19
622.M41 Inquisitor Estroz purges House Thrungg after members of the noble house summon the Slaaneshi daemon Merthen the Skindancer. Only three members of Thrungg survive, being off-world at the time. Sebellus Hive's manufacturing capability is crippled for months despite the timely intervention of the Inquisitor's Acolytes. Dark Heresy: Daemon Hunter pg. 90
651.M41 Commander Puretide is born in Dal'yth sept. Codex: Tau Empire (6th Edition) pg. 28
659.M41 Logan Grimnar becomes new Great Wolf of the Space Wolves. Grey Hunter (Novel) by William King, [Needs Citation]
666.M41 The Battle for Grand Al'gul. Imperial Armour Volume Nine - The Badab War - Part One, pp. 92-93.
The Yuctan Incident - The entire population of Yuctan, including a Naval depot housing squadron Farsight, vanishes following an encounter with Necron raiders. A single Cobra destroyer survives to tell the tale. The Harvest Fleets
672-990.M41 Segmentum Tempestus experiences a sudden and severe rise in warp storm activity, afflicting even the most reliable Warp routes. Natural and unnatural disasters plague the worlds of the Orpheus Sector. Psykers report recurring nightmares of dead cities and rising darkness. The Ordo Hereticus and Ordo Malleus ruthlessly suppress knowledge of this nightmare epidemic. Only the vigilance of Battlefleet Orpheus and the Angels Revenant keep the sector from falling out of Imperial control. Imperial Armour Volume Twelve - The Fall of Orpheus pg. 23
679.M41 Trade War between Ferrozoica Hive and Vervunhive on the planet Verghast. Necropolis (Novel) by Dan Abnett, [Needs Citation]
689.M41 A localised and violent warp storm designated the "Howling Vortex" engulfs the Barren Stars, cutting off the Morros Lachrymal penitentiary from the rest of the Orpheus Sector. All void travel and communications cease, leaving the fate of the colony's thirteen million prisoners and the prison hulks en route a mystery. Imperial Armour Volume Twelve - The Fall of Orpheus pg. 24
Rogue trader Orolshan discovers the derelict Eternal Praetorian in orbit of the Witch-Cursed World. Rogue Trader: Into the Storm pg. 165
691.M41 The Battle of Jade Reach. Three rogue trader flotillas answer the call for help from the Imperial Navy vessel Wrote for Luck to fight an ork fleet. Rogue Trader Core Rulebook pg. 322
692.M41 The Angelis Boat, a buried ship of unknown metal, suddenly awakens without warning and flies away. The Angelis Boat is suspected of being a Necron Dirge class raider. Battlefleet Gothic Armada, pg. 78
696.M41 A Tau probe is discovered in the Koath system. The translated message was a greeting and an invitation to "share the culture, technology, and protection of the Tau Empire." Codex: Tau Empire (6th Edition) pg. 5
698-705.M41 The Corinthian Crusade. Chapter Master Marneus Calgar of the Ultramarines leads the crusade, which consists of Ultramarines, Angels of Absolution, Lamenters, Silver Skulls, Scythes of the Emperor, Marines Errant and over fifty Imperial Guard regiments. Waaagh! Skargor is crushed and the threat from the Orks of Charadon is diminished for over thirty years. Imperial Armour Volume Nine - The Badab War - Part One, pp. 76-77

700 - 799.M41

Year Event Source
701.M41 Corinth Crusade: the Liberation of Slaughterhouse III. Imperial Armour Volume Nine - The Badab War - Part One, pgs. 109, 111
703.M41 Erasmus Haarlock vanishes after wiping out his entire family. Rogue Trader Core Rulebook pg. 362
704.M41 The Siege of Tulwa. Marneus Calgar leads infiltration force that destroy the Fortress of Pain (Iron Warriors). [Needs Citation]
710.M41 A Mechanicus tribunal declares Magos Biologis Sar Resque heretek and Excommunicate for deliberately releasing a mutation-plague upon Outpost 1253. Dark Heresy: Creatures Anathema pg. 11
718.M41 Roodmar Urussalin, last of his rogue trader line, is presumed slain by orks. Rogue Trader Core Rulebook pg. 362
The Inquisition discovers that the Sinners' Plagues in the Drusus Marches are the work of heretek Magos Biologis Sar Resque. Dark Heresy: Creatures Anathema pg. 11
722.M41 The last group of heretek Magos Biologis Sar Resque's followers are destroyed along with the colony hive of Teruxyne. Resque remains at large. Ibid.
731.M41 Commander Puretide is crippled in battle while touring the Damocles Gulf colonies. He retires to Mount Kan'ji on Dal'yth, mentoring exceptional Fire Caste initiates. After his death, the Earth Caste creates an AI hologram so his wisdom can reach further generations. Codex: Tau Empire (6th Edition) pg. 28
733.M41 The decade-long Arkunasha War begins. Commander Farsight is active during the war. Ibid. pg. 29
737.M41 Valos reported stripped of life, later revealed to be the work of Hive Fleet Behemoth. [Needs Citation]
738.M41 Latest Founding (26th). Warhammer 40,000 Compendium, p. 6
739.M41 Wolf Lord Finn Goresson boards the gargantuan Ork warship Starkrusha, with a small force of Space Wolves. Six months later, he emerges from the ship with Warboss Godstompa's head hanging from his belt. Codex: Space Wolves (5th Edition), p. 18
740.M41 The Exorcists Chapter save the planet of Stonekraal from a large Genestealer infestation. Imperial Armour Volume Ten - The Badab War - Part Two, pp. 126-127
740-743.M41 The Balance Wars take place. The Sabbat Worlds Crusade (Background Book) by Dan Abnett, [Needs Citation]
741.M41 Inquisitor Bastalek Grim attends the Great Feast of Wolf Lord Gerrod Redbeard, committing the sagas recounted there to his eidetic implants. From these he creates Imperial records later titled "The War of the Giants." Codex: Space Wolves (5th Edition), p. 18
Following a costly victory over Imperial Titan Legions on Malaxis, the Autarchs of the five largest eldar craftworlds convene. They decide that the lesser races must be shown their place; their message spreads across the craftworlds, resulting in the largest recruitment of eldar taking the Path of the Warrior in millennia. Many civilian paths are abandoned as a result. Codex: Eldar (6th Edition) pg. 22
Thulean datavaults recovered from Dolorium's voids at this time describe star systems beyond the Koronus Expanse. Rogue Trader Core Rulebook pg. 337
742.M41 The Imperium of Man launches the Damocles Crusade against the Tau Empire. The Tau first deploy Onager Gauntlet technology against Imperial armour. A truce is agreed upon and Imperial forces are redeployed against the approaching Hive Fleet Behemoth. Due to a lack of transports, several regiments of the Imperial Guard are left behind. First Imperial contact with Kroot. The Tau Empire's Second Sphere of Expansion ends. Codex: Space Marines (4th Edition), pg. 20; Codex: Tau (3rd Edition), pg. 58; Codex: Tau Empire (6th Edition) pgs. 29, 73
744.M41 Taggarath, Seer of Corrinto, foresees the approach of the End Times, and prophesies a time of unprecedented upheaval, in which even the light of the Emperor is swallowed in darkness. Taggarath is immediately executed for heresy, but his prophecy still spreads in whispers. Warhammer 40,000 5th Edition Rulebook pg. 126; Codex: Chaos Daemons (6th Edition) pg. 22
A string of murders and thefts at the Kellerman Scholam on Amarah are linked to a Cult Celestarii plot regarding xenos artefacts. A gun battle between cultists and Adeptus Arbites leaves the Scholam a smoking ruin. Witnesses report seeing a fire-shrouded figure retrieve several artefacts from the burning complex, untouched by the fire. Forensic examinations do not establish which of the Scholam's collection of xenos artefacts were stolen before the fire destroyed the rest. Imperial Armour Volume Twelve - The Fall of Orpheus pg. 24
745.M41 The Fall of Tyran, the battle that marked the first major encounter between the Human species and the alien Hive Fleets. Inquisitor Kryptman would eventually investigate the incident and designate the new threat as the Tyranids. Codex: Tyranids (5th Edition) pgs. 8-9
The First Tyrannic War. Hive Fleet Behemoth attacks the Ultramarines' homeworld of Macragge. At the Battle for Macragge, the Tyranids are defeated, but only at great cost - the entire First Company is wiped out, and the 3rd and 7th Companies suffer horrific casualties. Ibid. pgs. 10-11
Aun'Va makes the decision to place Commander Puretide's favoured pupils (including O'Shaserra) into stasis, allowing them to be recalled when needed in the future. Codex: Tau Empire (6th Edition) pg. 29
746.M41 The Sons of Guilliman purge Nova Terra of genestealers, executing the entire ruling class in the process. Sergeant Constantinus declares he will lead the sector into a better age, seceding it from the Imperium. The bloody unrest attracts the attention of the Ruinous Powers. The Officio Assassinorum has Constantinus killed to end the rebellion. Codex: Chaos Space Marines (6th Edition) pg. 24
Rogue trader Wrath Umboldt discovers the Processional of the Damned and glimpses the Alenic Depths. Rogue Trader Core Rulebook pg. 362
748.M41 The Blood Star Campaign. Warhammer 40,000 6th Edition Rulebook, pg. 172
749.M41 The 812th Feast of Blades is held, with all twelve of the competing Space Marine chapters in attendance. Hervald Strom of the Iron Knights is victorious. Codex: Space Marines (5th Edition), pg. 49
750.M41 The Red Wolves Space Marines, unsupported, prevent the Night Lords Chaos Space Marines from acquiring the possessed cruiser Shadeblight. Ibid.
The Great Exodus. After mysterious activity in the Argos system involving six Eldar Craftworlds, every primary star within sixty light years is extinguished. Nearly 12% of the Imperial population and 32% of the heavy industry is successfully evacuated. The ring of dead planets becomes a salvager's paradise and is now known as the Deadhenge. Warhammer 40,000 6th Edition Rulebook, pg. 172
752-754.M41 The Khulan Wars take place. The Sabbat Worlds Crusade (Background Book) by Dan Abnett, [Needs Citation]
754-756.M41 The Salamanders Chapter purge the Moons of Ymgarl of Genestealers. Captain Sokhar Bray'arth of the 4th Company is interred in the Iron Dragon Dreadnought chassis after suffering mortal wounds. Imperial Armour Volume Ten - The Badab War - Part Two, pp. 78, 172;
Codex: Space Marines (5th Edition), p. 49
754.M41 The Harvest of Reavers. Aspyce Chorda has the surviving pirates of Iniquity lobotomized and used as slave-serfs. Rogue Trader Core Rulebook pg. 361
755.M41 The Sabbat Worlds Crusade, the largest Imperial offensive since the Macharian Crusade, begins. Codex: Imperial Guard (5th Edition), p. 22
757.M41 First recorded incidence of the Zombie Plague. Twenty-three billion healthy Imperial citizens of Hydra Minoris are quarantined. Warhammer 40,000 5th Edition Rulebook, pg. 126; Codex: Chaos Space Marines (6th Edition) pg. 24
759.M41 Scouring of Quintarn. Marneus Calgar commands forces against Ork scavengers who captured the triple system of Quintarn, Tarentus and Masali (part of the Ultramar Coalition) in the aftermath of the Battle for Macragge. [Needs Citation]
760.M41 The Minotaurs Chapter breaks the Siege of Casaubon. Imperial Armour Volume Ten - The Badab War - Part Two, pg. 109
Commander Farsight recaptures much of the territory the Tau Empire lost in the Damocles Gulf Crusade but refuses the recall order. He establishes the fortified Farsight Enclaves. Codex: Tau Empire (6th Edition) pg. 29
762.M41 Marneus Calgar leads the Ultramarines against the Daemon-corrupted Forge World of Thrax. After retrieving crucial data-records from the manufactorums, banishing thousands of daemons in the process, Calgar withdraws his forces and pronounces Exterminatus on the planet. Codex: Space Marines (5th Edition), pg. 40
The Catachan MXIV 'Unseen Lurkers', led by Colonel 'Steel Eye' Black engage Orks of the Death Skulls on the planet of Kato, a shadow world. The stalemate is only broken once Sentinels locate and destroy the Ork Stompa factory hidden in Widow Valley. Codex: Imperial Guard (5th Edition), pg. 22
765.M41 Space Marine Chapter Losses to date: 13 lost in the Warp, 21 Irrecoverable battle losses, 9 Geneseed failure, 4 Inquisitorial purges, 16 Other circumstances. Codex: Space Marines (3rd Edition) pg. 47
Warmaster Slaydo killed on the planet Balhaut. The Sabbat Worlds Crusade (Background Book) by Dan Abnett, [Needs Citation]
766.M41 Prince Yriel's Eldar pirates attack several Imperial listening posts in the Catachan and Ryza systems. Warhammer 40,000 5th Edition Rulebook pg. 126
Twelfth Army is diverted from the Second Kholdas War to put down a rebellion on Danik's World. Rebel Winter (Novel) by Steve Parker, Hammer and Shield
The Chartist freighter Manticore Agirus suffers a failure of its Geller field during transit from Arcantis to Ribasu. The screams of its crew and three thousand passengers echo through the Capitoline sub-sector's Warp signature for decades. Imperial Armour Volume Twelve - The Fall of Orpheus pg. 24
769.M41 Defence of Vervunhive, planet Verghast. Necropolis (Novel) by Dan Abnett, [Needs Citation]
772.M41 He'stan Vulkan, Forgefather of the Salamanders, recovers the Gauntlet of the Forge after defeating the Eldar pirate lord Iath Bloodweaver. Codex: Space Marines (5th Edition), p. 49
773.M41 Brazen Skulls are listed as extinct. [Needs Citation]
774.M41 Gereon Mission, Sabbat Worlds Crusade Traitor General (Novel) by Dan Abnett, [Needs Citation]
775-777.M41 Sulsalid Campaign, Fourth Quadrant rebellion. Imperial Armour Volume Nine - The Badab War - Part One pp. 100-101
777.M41 Chaos Space Marines led by the Black Legion break out of the Cadian Gate, only to be slowed by the Cadians and are eventually driven back with the help of the Imperial Fists. Codex: Imperial Guard (5th Edition), pg. 22; Codex: Space Marines (5th Edition), pg. 49
778.M41 General Andreas Carnhide, a veteran Imperial Guard commander, draws together feuding factions of Guard, Navy, and Adeptus Mechanicus to retake the hive world of Lyubov from the forces of Chaos, including warriors of the Blood Pact. Tactica Imperialis, [Needs Citation]
780.M41 Lycanthos Drift Campaign, Fourth Quadrant rebellion. Imperial Armour Volume Nine - The Badab War - Part One pp. 57, 59; Codex: Dark Angels (6th Edition) pg. 25
781.M41 Wolf Lord Osric Three-Fists's fleet is ambushed in the Maelstrom by a larger Chaos fleet. When his flagship is crippled, Osric leads the remains of his Great Company in a boarding action of the Chaos flagship Storm of Hate. Only thirty Space Wolves board the ship, but manage to capture the ship and turn its firepower on the rest of the Chaos fleet. Codex: Space Wolves (5th Edition), p. 18
783.M41 Battle of Maedrax. Eldrad Ulthran of Ulthwé foresees an Imperial explorer force would awaken the Necron tomb world. The Eldar destroy the explorer fleet and then the Necron complex. When leaving Maedrax, they have to fight their way through a relief force of Blood Angels Space Marines. Unfortunately, the Necron dynasty is much larger than Eldrad believed; tomb worlds across the system awaken. White Dwarf 342 (US) "Timeline" p. 33; Codex: Eldar (6th Edition) pg. 22
785.M41 Aspyce Chorda goes to war with Calligos Winterscale over resources. Rogue Trader Core Rulebook pg. 361
786.M41 Eliac Zephyrblade of Saim-Hann delivers an ultimatum to the Imperial colony on Gnosis Prime: evacuate or die. The colonists refuse and Zephyrblade leads his warhost against them. Despite being outnumbered one hundred to one, the warhost destroys the colony's military and industrial infrastructure before leaving the colony to their Dark Eldar allies. Codex: Eldar (6th Edition) pg. 22; Planetstrike pgs. 60-61
790.M41 The Vostroyan IX under Graf Toshenko are wiped out defending the factory city of Polia on the planet of Nimbosa from the Tau Commander Brightsword, inspiring the populace to resist the Tau's culture of 'the Greater Good'. Codex: Imperial Guard (5th Edition), pg. 22
794.M41 The Faceless Lord Karrad Vall braves the Maw to shell Footfall and battle Calligos Winterscale. His fleet tears through the defences and he leaves taunting messages before he disappears for a decade. Rogue Trader Core Rulebook pg. 356
795.M41 The Cadian 23rd put down an uprising in the Krandor system. Warhammer 40,000 5th Edition Rulebook, pg. 126
796.M41 Adinbur Prime: Patrol group Tiryns assaulted by Necron escorts, but escape. Battlefleet Gothic Armada, pg. 77
797.M41 The Siege of Zalathras. Marneus Calgar of the Ultramarines holds the gate alone against an invasion of Orks for a night and a day. Codex: Space Marines (5th Edition), pg. 40
ca. 798.M41 The Siege of Somonor: Eldar Farseer Eldorath Starbane attacks Somonor. Necron Overlord Szaron of the Arrynmarok Dynasty swears allegiance to Imotekh, becoming a client of the Sautekh Dynasty. Imotekh repulses Starbane's attack, allowing him to flee back to Alaitoc after severing his right hand. Codex: Necrons (5th Edition) pgs. 13, 22
799.M41 The Ultramarines begin to fortify the eastern bounds of Ultramar against the Tau Empire. Codex: Space Marines (5th Edition), pg. 40
The San Leor Massacre. The Red Corsairs attack San Leor. Nine Orders Militant of the Adepta Sororitas launch a counter-attack to defend the Sisterhood's original homeworld and annihilate the attackers.

(Canon Conflict) The Red Corsairs were not formed until after the Badab War, over one hundred years after 799.M41

Codex: Sisters of Battle (5th Edition), [Needs Citation]

800 - 899.M41

Year Event Source
801.M41 Lugganath Eldar craftworld first detected by the Imperium. Codex: Eldar (3rd Edition), [Needs Citation]
The Astronomican flickers, resulting in thousands of ships being lost in the Warp. White Dwarf 342us "Timeline" p. 33; Warhammer 40,000 5th Edition Rulebook pg. 127
Hive Fleet Naga enters the galaxy from the Eastern Fringe. Codex: Tyranids (5th Edition), pp. 16-17
803.M41 The Ordo Xenos burns Amphian Deed for his role in the Halo of Darkness cult, ending the Deed lineage of rogue traders. Rogue Trader Core Rulebook pg. 362
804.M41 Cardinal-Astral Borja dies and Cardinal Xaphan is named as his successor. Xaphan declares that he will make a pilgrimage through the Scarus Sector, which will take five years. Imperial Armour Volume Five - The Siege of Vraks - Part One, pg. 8
805.M41 Marneus Calgar leads three Ultramarines companies against Waaagh! Gutshredda in the Forgoil system. In only three weeks, the Ultramarines halt the Waaagh! by destroying the Orks' tellyporta ships and Stompa factories. Calgar personally leads a Terminator Squad in a boarding action of Gutshredda's flagship, Da Superdestructa. Codex: Space Marines (5th Edition), pg. 40
807.M41 Purgation of Jhanna. Marneus Calgar leads two Ultramarines companies in the recapture of rebellious oceanic cities of Omon and Vorlencia against renegades and Chaos Space Marines. Codex: Space Marines (3rd Edition) pg. 36
674810.M41 After a failed assassination attempt on Cardinal-Astral Xaphan, civil unrest consumes Vraks Prime. The Departmento Munitorum receives an urgent request for relief. Imperial Armour Volume Five - The Siege of Vraks - Part One, pg. 11
811.M41 Dark Eldar raiders mount occasional but highly damaging raids on the main habitation area of Naxos, Colony One, until a force of Space Marines from the Iron Snakes chapter under the command of Captain Trokus turns up to resolve the situation. Tactica Imperialis, [Needs Citation]
Wayward Son, an escort vessel belonging to the flotilla of rogue trader Caleb Gilderoy, appears at the outer perimeter of an Adeptus Mechanicus outpost at Harrow Watch. Garbled communications claim that the ship suffered severe damage from hostile xenos and a warning of a force that destroyed Gilderoy's flotilla. The ship refuses to turn back and is destroyed when it enters Harrow Watch's exclusion zone. Imperial Armour Volume Twelve - The Fall of Orpheus pg. 24
The merchant brig Daughter of Regals is lost with all hands. The Rak'Gol are believed to be responsible. Rogue Trader Core Rulebook pg. 359
812.M41 Fleets from the Malan'tai, Iyanden, and Idharae Craftworlds eliminate Hive Fleet Naga, but a single bioform infiltrates and consumes Malan'tai. Codex: Tyranids (5th Edition), pp. 16-17, 58; Codex: Eldar (6th Edition) pg. 22
The Purging of Contqual. The Iron Hands drive the forces of Chaos from a dozen planets on the Contqual subsector. Codex: Space Marines (5th Edition), p. 49
812-813.M41 The Luxor Uprising. The Novamarines crush an Alpha Legion-sponsored insurrection on Luxor. Imperial Armour Volume Nine - The Badab War - Part One, p. 119
199812.M41 The first convoys of Imperial army men and materiel arrive in the Vraks system. Imperial Armour Volume Five - The Siege of Vraks - Part One, pg. 18
166813.M31 The 88th Imperial Guard (Krieg) heavy artillery opens fire on the outer defence lines of the Fortress of Vraks. The Siege of Vraks begins. Ibid. pg. 20
212813.M41 Siege of Vraks: the first infantry battle begins in Sector 46-39. Three days of battle sees almost no gains on either side. Ibid. pgs. 22-23
813.M41 Unidentified robotic forces annihilate the Tau Empire colony of Cano'var. Codex: Tau Empire (6th Edition) pg. 29
Inquisitor Vilane orders the eradication of Kulth's planetary defence force in response to their increasingly-violent displays of martial prowess. The ensuring 19 Hours War sees the near-total destruction of Kulth's southern continent. Dark Heresy: Daemon Hunter pg. 94
897814.M41 Siege of Vraks: the Battle of Fort A-453. The 12th, 30th, and 34th line korps secure a breakthrough at Fort A-453 and push the defenders back across open ground. Imperial Armour Volume Five - The Siege of Vraks - Part One, pgs. 25-29
815.M41 Contact is lost with Explorator Fleet 913. Three companies of the Ultramarines are sent to investigate, but find only empty vessels drifting in space. Codex: Space Marines (5th Edition), p. 40
Dal'yth sept receives unexpected aid from Commander Farsight to repel an invasion by the Ork warboss Grog. Codex: Tau Empire (6th Edition) pg.29
255815.M41 Siege of Vraks: a renegade counter-attack in Sector 60-53 forces the collapse of the 1st line korps's left flank. The 19th regiment loses over eighty thousand men in the first two days. It will take six months to recover the lost ground. Imperial Armour Volume Five - The Siege of Vraks - Part One, pgs. 38-41, 46
818.M41 Throth Half-Head of the Space Wolves defeats the giant Ur-Bolg wreaking havoc on Fenris. Codex: Space Wolves (5th Edition), p. 18
649818.M41 Siege of Vraks: a sneak assault on a defence laser emplacement in Sector 50-45 turns into an open fight and the attack is repulsed. Imperial Armour Volume Five - The Siege of Vraks - Part One, pgs. 46-47
819.M41 A perceived insult provokes fighting between the Mortifactors and the Crimson Fists. Only an intercession by Ultramarines Chapter Master Marneus Calgar prevents open war, and the incident is kept secret from the Adeptus Terra. Codex: Space Marines (5th Edition), p. 49
An outbreak of contagious madness and despair affects Ilsig Hive on Chemarium II, causing thousands to kill themselves. Civil order collapses. Ranker Nonesuch, the self-titled "Beggar King," arises to lead his followers to overthrow the planetary government and spread his malevolence to the rest of the system. An exclusion zone is established around the system. Imperial Armour Volume Twelve - The Fall of Orpheus pgs. 24-25
820.M41 The Flesh Tearers seal a Warp rift in the Adeonis Sector against an onslaught of Tzeentch's daemons. The Changeling tugs the strings of fate to move them toward damnation. Codex: Chaos Daemons (6th Edition) pg. 22
Siege of Vraks: reports of Adeptus Astartes in the renegade forces comes to the attention of Lord Commander Zuehlke. Arkos's warband has joined the fight for Vraks. Imperial Armour Volume Five - The Siege of Vraks - Part One, pg. 47
821.M41 Siege of Vraks: the Dark Angels arrive in system consisting of the battle barge Angel of Retribution and the strike cruisers Sword of Caliban and Salvation. Azrael leads half of the Chapter's battle-brothers in response to the request for aid. They destroy the star port and both causeways across the Srna trench and then depart. Imperial Armour Volume Five - The Siege of Vraks - Part One, pgs. 54-58
822.M41 Forces from Craftworld Alaitoc drive off a raid on Ildanira by Abaddon the Despoiler Warhammer 40,000 5th Edition Rulebook pg. 127
Wolf Lord Erik Morkai ambushes the pirates of the Kabal of the Shattered Hand over the Leutin Necropolis. Codex: Space Wolves (5th Edition), p. 19
101822.M41 Siege of Vraks: three siege regiments make an all-out attack on the defences of the Fortress of Vraks. After eight days, the 468th siege regiment cracks the Fortress of Vraks's second line of defence, forcing the renegades back to the inner defence line. Imperial Armour Volume Five - The Siege of Vraks - Part One, pgs. 68-75
054823.M41 Siege of Vraks: First Battle of Vraks. A Chaos fleet overwhelms the Imperial blockade and lands reinforcements on Vraks Prime. The 88th Army's supply line is now cut off. Imperial Armour Volume Six - The Siege of Vraks - Part Two, pgs. 8-13, 23
077823.M41 Siege of Vraks: Assault on Mortuary Ridge. Forces from the 468th regiment capture the first defences but find themselves under assault from Khornate Chaos Space Marine warbands and are forced back down the hill. Ibid. pgs. 18-23
158823.M41 Siege of Vraks: Disaster at 61-47. Unexpected renegade air and Titan support turns the 101st regiment's attack into a rout. Ibid. pg. 23-27
711-735823.M41 Siege of Vraks: Nurgle Chaos Space Marine warbands annihilate the trapped 19th regiment with chemical weapons, chiefly TP-III. Ibid. pg. 36-40
082824.M41 Siege of Vraks: Second Battle of Vraks. The replenished Battlefleet Scarus leaves for Vraks Prime. The traitor battleship Anarchy's Heart and her escorts ambush the fleet, crippling Duke De Walle and destroying her escorts before retreating under fire from General Dyhane. The fleet resupplies the 88th army and deploys 22 Titans of the Legio Astorum. Ibid. pgs. 40-42
249825.M41 Siege of Vraks: The Kagori Offensive. With air and Titan support, the 88th army reclaims the land it had ceded in the Assault on Mortuary Ridge. Ibid. pgs. 42-48
803825.M41 Siege of Vraks: The Attack on Armoury 55-46. Krieg engineers detonate mines tunneled beneath Armoury 55-46 and fight for four days, but make no gains against the renegades and Khorne Berzerkers. Ibid. pgs. 63-68
2059826.M41 The Conclave of Scarus declares Deacon Mamon Extremis Diablous. Ibid. pg. 75
714826.M41 Siege of Vraks: the Sector 57-44 mine is detonated, collapsing a section of the fortress's curtain wall and allowing Gorgon troop transports into the breach. Seven assaults through the breach fail to establish a beachhead. Ibid. pg. 69-78
989826.M41 Siege of Vraks: Operation Execution Place. Red Scorpions strike force Ainea takes the gap at Sector 57-44 and holds it until Imperial forces consolidate on their position. Ibid. pg. 79-82
101827.M41 Siege of Vraks: Grey Knights arrive in the Vraks system and Inquisitor Lord Hector Rex assumes overall command of the 88th siege army. Imperial Armour Volume Seven - The Siege of Vraks - Part Three, pg. 9
273827.M41 Siege of Vraks: the 34th line korps is embroiled in a "green hell" when TP-III shells, plague mutants, plague zombies, and Plague Marine forces meet their offensive. Ibid, pg. 11
628827.M41 Siege of Vraks: the 15th company of the 468th regiment captures point 202, "Hangman's Hill." Ibid, pg. 18
412828.M41 Siege of Vraks: the Battle for Gate 579-459. Ibid, pgs. 27-30
081830.M41 Siege of Vraks: Inquisitor Lord Hector Rex leads the assault on the Lower Gate of the Citadel of Vraks. Ibid, pgs. 51-53
159830.M41 Siege of Vraks: the Red Scorpions battle barge Sword of Ordon arrives in the Vraks system with four hundred battle brothers to aid the 88th army by the request of Inquisitor Lord Hector Rex. Ibid, pg. 61
Siege of Vraks: Inquisitor Lord Hector Rex battles and banishes An'ggrath at the climax of the battle for the Cardinal Gate. Ibid, pgs. 68-69
Siege of Vraks: Space Marine forces assault the Citadel. Interrogator-Chaplain Belphegor captures Arkos. Ibid, pgs. 76-82
288830.M41 Siege of Vraks: the Angels of Absolution battle barge Liberatorii Delictum and strike cruiser Repentant destroy Anarchy's Heart. Ibid, pg. 84
411830.M41 Siege of Vraks: Ordo Malleus forces destroy a Warp portal in the Citadel undercroft and banish Uraka Az'baramael. Ibid, pgs. 85-86
414830.M41 The Siege of Vraks comes to an official end. Thirty-four Krieg regiments have fought for almost eighteen years and lost almost fourteen million men. Vraks Prime's original population of eight million souls has been wiped out, the numbers of enemy losses incalculable. In the end, Vraks Prime has been utterly destroyed in the fighting and is cordoned off by the Inquisition. Ibid, pg. 86
832.M41 The Deathwing deploys en masse to kill or capture every inhabitant of Minoria's moon in the Periliac System, ignoring requests for their presence to fight Waaagh! Drillakilla on Periliac Prime. Codex: Dark Angels (6th Edition) pg. 25
833.M41 The Vinculus Crusade is fought by Black Templars and Sisters of Battle of the Order of the Bloody Rose under the command of Marshal Ludoldus and Canoness Jasmine against an assassin-cult on Peleregon IV. The Daemon-possessed Inquisitor Vinculus is slain. Codex: Black Templars (4th Edition), p. 19
835.M41 The War for Piety. Piety emerges from a Warp storm overrun by Daemons. Canoness Sariah leads a mission of her Order of the Sacred Rose to recover valuable artifacts from the Reliquary of Hope, one of the few untainted areas. Only the Canoness and two Celestians survive entering the Reliquary, but recover Saint Dolan's right thighbone and three pages of the Lexicon of Falsehoods. They leave just before a fleet of Grey Knights arrives and performs Exterminatus on the planet by cyclonic torpedoes. Codex: Sisters of Battle (5th Edition), [Needs Citation]
837.M41 Space Wolves and Flesh Tearers fight, brother against brother, in a dark moment for both Chapters at the battle of Honour's End. Codex: Space Wolves (5th Edition), p. 19
841.M41 Ninety-four years after the Battle for Macragge, the Ultramarines First Company's operational strength exceeds fifty percent for the first time. Codex: Space Marines (5th Edition), p. 40
845.M41 Dark Eldar pirates capture Warmaster Ingenus, commander of the Dimmamak War, escalating the situation. In response, all high ranking Imperial Guard officers are assigned bodyguards and another forty thousand regiments are raised. Codex: Imperial Guard (5th Edition), p. 22
The Blood Swords chapter purges the Inando system. More than one hundred billion Imperial citizens are slain in the resulting Exterminatus actions. Codex: Space Marines (5th Edition), p. 49
849.M41 Cato Sicarius, Captain of the Ultramarines' Second Company, is appointed High Suzerain of Ultramar. Codex: Space Marines (5th Edition), p. 40
All contact is lost with Birmingham, the Black Planet. Subsequent investigations confirm a Dark Eldar massacre. Warhammer 40,000 5th Edition Rulebook pg. 127
The 813th Feast of Blades. Hervald Strom of the Iron Knights is victorious yet again, despite suffering heavy wounds in the Vinculus Crusade. It is the first time in the history of the event that a single Chapter, let alone a single Champion, has won two successive victories. Codex: Space Marines (5th Edition), p. 49
850-901.M41 Third Inter-Guild War. The Guild Fathers, Inca Sector of the Ultima Segmentum, fight a war against Eldar pirates, sponsored by business rivals. The Sons of Antaeus and Subjugators Space Marine chapters answer the call of the Guild Fathers. Chapter Approved 2004 The Cursed Founding by Andy Hoare, Graham McNeill, and Phil Kelly
850.M41 Inquisitor Solomon Lok leads an expedition to the Anphelion system. Warhammer 40,000 5th Edition Rulebook pg. 127
852.M41 The Invaders chapter assault the Eldar Craftworld Idharae. They succeed in destroying the planet, despite taking horrendous casualties. Codex: Space Marines (5th Edition), pg. 49
853.M41 Battle of the Steel Cross. Captain Cortez of the Crimson Fists slays an Ork Warlord and his bodyguard. Codex: Space Marines (3rd Edition) pg. 39
The Daemonbane War. The Great Company of Wolf Lord Sven Bloodhowl is saved on the world of Yaogeddon when the Radical Inquisitor Lord Querrian turns the rival hordes of Khorne and Slaanesh against each other. When the Ordo Malleus demands Querrian's execution, the Space Wolves fight against their forces until Querrian can escape. Codex: Space Wolves (5th Edition) pg. 19
The Second Krandor Rebellion. Warhammer 40,000 6th Edition Rulebook, pg. 173
855.M41 The Assault on Black Reach. The Ultramarines Second Company under Captain Cato Sicarius defeats Waaagh! Zanzag on Black Reach. Codex: Space Marines (5th Edition), pp. 36-37, 40
857.M41 Saim-Hann Eldar launch a surprise assault on the Mortant VII 'Headhunters' during the Sacking of Colonia. A single squad of Catachan Devils, led by Gunnery Sergeant Harker drives back the xenos after emerging from cover and killing the Eldar's Autarch. Codex: Imperial Guard (5th Edition), pg. 22
The fleet of the Silver Skulls chapter blockades the worlds of the Lazar system for three years. Since the worlds are dead, questions are asked, but no answers are ever given by the Silver Skulls. Codex: Space Marines (5th Edition), pg. 49
858.M41 The Defence of Dimmamar. The birth world of Sebastian Thor is suddenly attacked by Farseer Kauerith leading elements of the Eldar Craftworld Ulthwé. Though no reason for the attack is evident, the Farseer is killed in the course of the battle by Seraphim Superior Amelda of the Order of the Bloody Rose and her squad. Codex: Sisters of Battle (5th Edition), [Needs Citation]
861.M41 Battle of Arconar. Marneus Calgar defeats a coalition of Eldar Raiders on the feral world of Arconar, scattering their forces and capturing their bases both on and off world. Codex: Space Marines (3rd Edition) pg. 36
The Ultramarines' chapter records indicate that they have finally replaced their losses from the Battle for Macragge. Codex: Space Marines (5th Edition), pg. 40
862.M41 Waaagh! Skullkrak invades the Targus system. Kayvaan Shrike and the Raven Guard Third Company are among the forces that respond. Codex: Space Marines (5th Edition), pg. 49
863.M41 The Saint Cyllia Massacre: The Adamant Fury Titan Legion falls to Chaos and massacre the Saint Cyllia PDF before escaping1. Leading the Cadian 423rd, Knight Commander Pask engages rearguard elements of the traitor Titan Legio.2 1Warhammer 40,000 5th Edition Rulebook, p. 127

2Codex: Imperial Guard (5th Edition), p. 22

865.M41 The Purging of Modanna, Kor'sarro Khan, Master of the Hunt of the White Scars, drives the Daemon Prince Kernax Voldorius from his most important fortress. Codex: Space Marines (5th Edition), p. 49
867.M41 Captain Cortez of the Crimson Fists breaks through Eldar lines, despite suffering seventeen wounds, including a stab through one of his hearts and two heavy weapons hits. Codex: Space Marines (3rd Edition) pg. 39
870.M41 Mogul Kamir and Imperial Guard regiments of Attila deploy in force on the planet of Loxar IV to fight a three-year campaign against the Necrons. Victory is finally taken after the ill-fated charge of the Lumen Valley, the largest calvary charge to take place in records of the Imperium. Codex: Imperial Guard (5th Edition), pg. 22
871.M41 The Liberation of Quintus. With the aid of Kayvaan Shrike and the Raven Guard Third Company, Kor'sarro Khan slays Kernax Voldorius in the streets of Mankarra, and returns with the Daemon Prince's head to the White Scars' fortress-monastery. Codex: Space Marines (5th Edition), pg. 49
876.M41 The Bloodtide returns under the command of the Bloodthirster Ka'jagga'nath. It rampages across the planet Van Horne until Ka'jagga'nath is banished by the 4th Brotherhood of the Grey Knights. Warhammer 40,000 6th Edition Rulebook, pg. 173; Codex: Chaos Daemons (6th Edition) pg. 22
877.M41 An enormous Void whale emerges from the Warp, mutated by exposure to the Empyrean. The Space Wolves of Engir Krakendoom's Great Company board the entity before it can destroy the stronghold of Perillia, combating the entire hostile ecosystem in the whale's innards, before planting demolition charges on its vital organs and escaping seconds before the explosion. The Perillian Gas Belt is born from the whale's remains. The gas belt overtakes Rillith and Deith, bringing catastrophes. The Inquisition resorts to sorcery to disperse the gas belt. Codex: Space Wolves (5th Edition), pg. 19; Codex: Chaos Daemons (6th Edition) pg. 22
878.M41 Chaos pirates, led by the Daemon Prince M'kar, claim several uninhabited planets on the borders of Ultramar; Ultramarines Captain Cato Sicarius destroys most of the pirate fleet in a battle in the Halamar Rift, though M'kar escapes into the Warp. Codex: Space Marines (5th Edition), pg. 40
879.M41 Battle of Knarts Landing. Marneus Calgar defeats a rebel army led by General Dornal in a thirty-day battle on the industrial world of Knart's Landing, taking less than 17% casualties. Codex: Space Marines (3rd Edition) pg. 36
883.M41 The largest armoured assault since the Battle of Tallarn, spearheaded by the Cadian 423rd, attacks and nearly annihilates a renegade Titan Legion in a battle on the Planus Steppes. Imperial forces are to endure the loss of over eight thousand tank companies and thirty five super-heavy detachments. Codex: Imperial Guard (5th Edition), p. 22
Dark Eldar warriors of the Kabal of the Black Heart raid Imperial Munitions Relay Base 359, causing the western Imperial flank to collapse during the Irgax Offensive and threatening the stability of the Imperial presence on Kyobin and the entire subsector. Warhammer 40,000 6th Edition Rulebook pg. 344
886.M41 A deputation from the Ecclesiarchy visits the Space Wolves' homeworld of Fenris, planning to investigate rumours of pagan worship. The Wolves open fire on the fleet, provoking a three-week war between the Wolves and three orders of the Adepta Sororitas, which ends when the Ecclesiarchy decides to retreat. Codex: Space Wolves (5th Edition), p. 19
888.M41 The Battle for Orar's Sepulchre. The entire Ultramarines chapter goes to war for the first time since the Battle for Macragge to defend Orar's Sepulchre on planet Commrath from Eldar forces from Craftworlds Alaitoc and Iyanden. In the final battle, Marneus Calgar defeats the Alaitoc Avatar in single combat. Codex: Space Marines (5th Edition), p. 40
The Crusade of Wrath: Black Templars defeat the Word Bearers and reclaim many worlds near the Maelstrom. Warhammer 40,000 5th Edition Rulebook pg. 127
891.M41 The Persya sector undergoes the 'long midnight' as Eldar pirates prey on them for over half the year, until driven off by Imperial Patrol Praxion. Warhammer 40,000 5th Edition Rulebook pg. 127
On Yurk, grav-tank skimmers from craftworld Iyanden destroy the forces of ork warlord Killfist without a single loss, preventing a Waaagh! from forming and threatening a nearby eldar colony. Codex: Eldar (6th Edition) pg. 22
892.M41 Captain Cortez defends the breach in Fortress Maladon's wall in twenty-one hours of constant fighting. Codex: Space Marines (3rd Edition) pg. 39
895.M41 Craftworld Alaitoc launches a devastating invasion of the Invaders' home world in retaliation for their destruction of Idharae. With the Invaders still under-strength, only three companies escape the disaster and their fortress-monastery is destroyed. The Invaders are thereafter a spacebound chapter. Codex: Space Marines (5th Edition), pg. 49
The Space Wolves and a host of Eldar Aspect Warriors ally to destroy the Waaagh! of Grimtusk Bloodboila. The operation is a success, but a simple mistranslation at the victory celebration afterwards leads to a fight breaking out, followed by open war between the Wolves, Eldar, and Orks. Codex: Space Wolves (5th Edition), pg. 19
897.M41 Sisters of Battle fortress-convent Sanctuary 101 is completely destroyed. This raid is the first recorded Imperial contact with the Necrons. Codex: Necrons (3rd Edition), pg. 11 Darkness Rising; Warhammer 40,000 5th Edition Rulebook pg. 127
Faze V is re-discovered by a Rogue Trader who has the support of the Dark Angels Fifth Company. The local human population is mind-linked with a huge artificial intelligence and the Dark Angels destroy it. Millions of locals rise up against the Imperium and the Dark Angels crush the rebellion and burn the planet to the ground. Bekenel, Grand Master of the Deathwing, retrieves some data from the machine complex. Codex: Dark Angels (3rd Edition), pg. 20; Codex: Dark Angels (6th Edition) pg. 25
Hive Fleet Colossus descends upon the Imperial world of Thressiax. Ignoring the orders of Imperial Command, Wolf Lord Bran Redmaw details two squads of Grey Hunters to protect the planet's spaceport from the Tyranids long enough for the civilian population to evacuate. Codex: Space Wolves (5th Edition), pg. 19
897-903.M41 Hive Fleet Gorgon eats through the Tau Empire until a combined force of Tau and Imperium of Man fleets stops it at Kel'shan. Codex: Tau Empire (6th Edition) pg. 29; Codex: Tyranids (5th Edition), pp. 18-21
899.M41 The Battle of Carrion Deep. One of the first confirmed and detailed conflicts between the Imperium and the rising Necron threat. Imperial Armour Volume Ten - The Badab War - Part Two, pp. 88-89

900 - 999.M41

Year Event Source
900.M41 The Tau's listening post on Morix Prime is eliminated by the Ultramarines' 4th Company. Codex: Space Marines (5th Edition), pg. 40
901-912.M41 Lufgt Huron, Chapter Master of the Astral Claws, revolts. An Imperial investigation fleet is destroyed in orbit of Badab, killing 23,000 agents of the Imperium. Huron declares himself Tyrant of Badab and secedes from the Imperium. The Badab War follows. Codex: Chaos Space Marines (4th Edition), p. 57; Codex: Chaos Space Marines (6th Edition) pg. 24; Warhammer 40,000 5th Edition Rulebook pg. 127
902.M41 The Thirteenth Castigation of Golgotha is carried out by the Fire Hawks Chapter. Imperial Armour Volume Nine - The Badab War - Part One, p. 69
903.M41 Badab War: the Lamenters, Mantis Warriors and Executioners join Huron's revolt. Codex: Chaos Space Marines (4th Edition), pg. 57
903.M41 Captain Cortez fights through the entire six-week Kardian campaign without supplies after they had been lost to enemy fire during deployment. Codex: Space Marines (3rd Edition) pg. 39
Hive Fleet Gorgon is destroyed by the combined forces of the Tau and the Imperial Guard. Codex: Tyranids (5th Edition), pp. 18-21
904.M41 Badab War: the Fire Hawks retaliate when their supply ship is captured by the Mantis Warriors. Codex: Chaos Space Marines (4th Edition), p. 57
A Chaos incursion on Paraghast turns Patrihive into a nightmarish twisted prison. Billions of souls fight daemons of Nurgle and Slaanesh as their home hive turns against them. Codex: Chaos Daemons (6th Edition) pg. 22
905.M41 Badab War: the Marines Errant are recalled from Eastern Fringe but find themselves protecting convoys more than actively attacking the rebels. Codex: Chaos Space Marines (4th Edition), p. 57
Siege of Castellax: The Iron Warriors Fortress World of Castellax is invaded and overrun by Waaagh! Biglug Stronghold Assault, p. 6
906.M41 Badab War: the Red Scorpions and Minotaurs are called in to suppress the revolt. [Needs Citation]
Badab War: The Betrayal at Grief - Lord High Commander Verant Ortys of the Red Scorpions is killed under an attack by unknown forces during a meet between the Loyalist and Secessionist forces. The Chapter Master of the Mantis Warriors Sartaq is also killed. Lufgt Huron is later blamed for this incident. Imperial Armour Volume Nine - The Badab War - Part One, p. 31
907.M41 (913?) Badab War: Several chapters are redeployed in response to Ork expansions in the Ultima Segmentum and the Imperial Navy assumes their responsibilities. Badab is blockaded, while more chapters are brought in to investigate the Executioners and Mantis Warriors' worlds. Codex: Chaos Space Marines (4th Edition), p. 57
908.M41 Badab War: The bulk of the Lamenters are caught in an ambush and surrender to loyalist forces. Codex: Chaos Space Marines (4th Edition), p. 57
908-912.M41 Badab War: A series of sieges see the fortresses of Huron crumble to the loyalists. Badab is eventually surrounded and cut off. Codex: Chaos Space Marines (4th Edition), p. 57
912.M41 The Badab War ends with the fall of Badab and final defeat of the Astral Claws. Heavy fighting in the Palace of Thorns sees Huron badly wounded but two hundred Astral Claws escape with him to the Maelstrom. Codex: Chaos Space Marines (4th Edition), pg. 57
Svengar the Red of the Space Wolves and his men disappear forever after sailing through a wyrmhole in search of Leman Russ. Codex: Space Wolves (5th Edition), pg. 20
The Death Korps of Krieg are sent to the world of Derondii in punishement for withheld tithes. The Death Korps spend the next ten years bombarding the world's cities to rubble, five years after recieving an unconditional surrender and two years after the last sign of life is spotted. Stronghold Assault, p. 7
912.M41-Present In the aftermath of the Badab War, the Lamenters, Mantis Warriors and Executioners are sent on century-long penitence crusades. Codex: Chaos Space Marines (4th Edition), pg. 57
913.M41 Disciples of Ahriman sack the Jollana Librarium. Warhammer 40,000 5th Edition Rulebook pg. 127
917.M41 Battle of Amion. Red Talons and Armageddon Steel Legion vs. rebel Imperial forces. [Needs Citation]
Azrael is named Grand Master of the Deathwing. Codex: Dark Angels (6th Edition) pg. 52
919.M41 Commissar Ciaphas Cain is attached to the Valhallan 12th Field Artillery Regiment in the hopes of enjoying a career in a backwater post as far from combat as possible. He ends up facing down a Tyranid Hive Tyrant on Desolatia completely by accident with nothing but a laspistol and chainsword. This event, and others following it, eventually snowball his reputation to ridiculous levels. He is also assigned a permanent adjutant, Gunner Ferik Jurgen. Fight or Flight (Short Story) by Sandy Mitchell, [Needs Citation]
920.M41 Loss of the troopship Emperor's Faithful to Eldar pirates. Over five million Guardsmen and 200,000 Naval personnel are listed as missing. Warhammer 40,000 5th Edition Rulebook pg. 127
The Tau Empire claims Ur-Clemait until the Word Bearers return to claim their Blood Tithe. Codex: Chaos Space Marines (6th Edition) pg. 26
921.M41 Marneus Calgar, Chapter Master of the Ultramarines, is ambushed by the Night Lords while en route to the Darkhold battlezone, and his ship crash-lands on the feudal world of Barathred. Several hundred Chaos Space Marines of the Night Lords make planetfall, but under Calgar's leadership, the planet's feudal population rises up and defeats them. Codex: Space Marines (5th Edition), p. 40
922.M41 The first four companies of the Dark Angels put down a rebellion on Sephlagm. Codex: Dark Angels (6th Edition) pg. 25
925.M41 Contact lost with eighteen planets in the Vidar sector, including the forge world Lentrel Prime. Warhammer 40,000 5th Edition Rulebook, p. 128
Waaagh! Grax invades the Ryza system. Regiments are raised from planets within ten light years, including the worlds of Barac, Ulani, Dulma'lin and Catachan. To meet demand, four-fifths of Dulma'lin's populace is drafted. The Orks would eventually be broken decades later at the Battle of Desolation Valley by Commander Mordrid van Hordric. Codex: Imperial Guard (5th Edition), p. 22
926.M41 The Vaxhallian Genocides: The Purge slaughter over fourteen billion Imperial citizens in a single month. Warhammer 40,000 5th Edition Rulebook, pg. 128; Codex: Chaos Space Marines (6th Edition) pg. 25
The Dulma'lin Cleansing: The Catachan II, led by Colonel "Iron Hand" Straken, the only regiment to survive planetfall on Dulma'lin, fights a year-long guerrilla war against the Ork invaders, destroying the Orks' main settlement two days ahead of the arriving Imperial reinforcement. Codex: Imperial Guard (5th Edition), pg. 23
The Necron World Engine is destroyed on the edge of the Doranno system, thanks to the heroic sacrifice of the Astral Knights chapter. Codex: Space Marines (5th Edition), pg. 49
927.M41 Green Skins and Black Hearts: The Ork Invasion of Perlia by Hismyonie Kallis is published. It is later used by Inquisitor Amberley Vail when she is organizing the Cain Archive. Death or Glory (Novel) by Sandy Mitchell, Editorial Note after Chapter One
An army of daemons wipes out the famous armoured siege regiment of Hammeront IV under the command of Grand Marshal Lourgant during the Fallaxian Scourging. Codex: Imperial Guard (5th Edition), pg. 23
928.M41 Two opposing Eldar Phoenix Lords of the Striking Scorpions Aspect Arha and Karandras, duel for seventeen days in the ruins of ancient Zandros. Warhammer 40,000 5th Edition Rulebook, pg. 128
The Catachan II, with the help of Planetary Defence Forces engage in search and destroy missions against Ork Kommandos in the polar ranges of the planet Ulani. Codex: Imperial Guard (5th Edition), pg. 23
929.M41 Due to the slow-moving machinations of the Administratum, the news of the destruction of the Hammeront IV regiment fails to be passed onto the Departmento Munitorum, which charges the regiment to lead the liberation of the Abraxis Citadel on Prassium. Codex: Imperial Guard (5th Edition), pg. 23
The Trenor Uprising. Three dozen Ultramarines Scouts, under the directions of veteran Sergeant Torias Telion, put down a rebellion on Trenor in less than a day. Codex: Space Marines (5th Edition), pg. 40
930.M41 The Orks under Krakskull are destroyed in a trap in a ravine on Arandra V by the Catachan XXIV 'Waiting Death'. Codex: Imperial Guard (5th Edition), p. 23
931.M41 The Gravalax Incident: an Imperial taskforce primarily made up of Valhallan Ice Warriors successfully prevents the Tau Empire from annexing the Imperial world of Gravalax. The Imperial Guard and the Tau make a rare alliance to eliminate a fifth column of genestealers among the population.1 For the Emperor (Novel) by Sandy Mitchell, [Needs Citation]
The Hammeront IV are charged with desertion by the Departmento Munitorum and their commander, Lord General Lourgant, is posthumously sentenced to death. Codex: Imperial Guard (5th Edition), p. 23
932.M41 Magus Stannum Vir discovers a priceless STC relic on the Agri world of Jollov. Combined elements from Catachan, Mordian, Kanak, Molov, and Agathon regiments sacrifice themselves defending the spaceport from Hive Fleet Moloch, buying Vir enough time to recover the artifact and escape. Codex: Imperial Guard (5th Edition), p. 23
933.M41 Insurgents, Chaos Cultists, Genestealers and a Tyranid Hive fleet splinter all threaten the world of Periremunda at the same time. They are narrowly defeated by a joint taskforce of the Imperial Guard and Navy. Duty Calls (Novel) by Sandy Mitchell, Editorial Notes after Chapters Eight and Twenty
The Ravagers, a Khorneate warband, began their raids on isolated shipping lines and colonies. The warband is too fast for the Imperial Navy to catch up. The Traitor's Hand (Novel) by Sandy Mitchell, Chapter One
934.M41 Ardaric Vaanes, Shadow Captain of the Raven Guard's 4th Company, is declared Excommunicate Mortis. The Chapter's Due (Novel)
by Graham McNeill,
Chapter Nine, pg. 181
Elysian Drop Troops of the Imperial Guard end a decade-long blockade of the Stranthium Orbital Space Docks, driving off Ork Kaptin Blacklaw and his Freebooterz. Codex: Imperial Guard (5th Edition), pg. 23
The Toran VI Massacres. The Crimson Fists defeat the warband of Chaos Lord Sathash the Golden. Codex: Space Marines (5th Edition), pg. 49
935.M41 M'kar returns from the Warp and seizes control of the star fort Indomitable with a horde of Daemons, in the outer orbit of Calth. Marneus Calgar leads Terminators from the Ultramarines First Company aboard the fort and defeats the Daemon Prince. M'kar is officially listed as destroyed, but Calgar later confesses that he was forced to imprison the Daemon within the star fort's warp core and set it adrift. Half of the Ultramarines' 5th Company is stationed aboard the fort to guard the daemon's prison. Codex: Space Marines (5th Edition), p. 40;
The Chapter's Due (Novel)
by Graham McNeill,
Chapter Three
An Imperial Guard offensive on Bren's World is stalled when it fails to overcome the defences of Haven's Spire. Elite Storm Trooper units break the deadlock by destroying several void-shield generators. Codex: Imperial Guard (5th Edition), pg. 23
936.M41 Hive World Derondii withholds its annual tithes. The Death Korps of Krieg are deployed as an honour guard for the Departmento Munitorum investigation team. After locals lynch the team, the Death Korps levels the primary hive city with a ten-year artillery barrage. Codex: Imperial Guard (5th Edition), p. 23
937.M41 Inquisitor Pranix leads a strikeforce of Space Wolves, Cadian and Tallarn Imperial Guard in an attempt to wrest the Hollow Worlds from the control of the Red Corsairs. Huron Blackheart has preselected sections of tunnel collapsed, isolating and destroying portions of the Imperial army. The Imperial army is forced to withdraw. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Chaos Space Marines (6th Edition) pg. 25
The Imperial Navy finally catches up with the Ravagers over the Tau colony of Salomine, resulting in the destruction of most of the warband. Salomine then possibly falls to the Imperium. The Traitor's Hand (Novel) by Sandy Mitchell, Chapter One
Surviving remnants of the Ravagers make their way to Adumbria to stop cultists from transforming the planet into a Daemon World of Slaanesh, but also encounter five Imperial Guard regiments and several Navy ships. By the end of the battle, both Chaos factions are utterly annihilated, and the planet is prevented from falling to Chaos. The Traitor's Hand (Novel) by Sandy Mitchell, Chapters One and Nineteen through Twenty
The Cadian 9th devastates Hive Fleet Scarabus at the walls of Fortress Carcasson without losing a single company. Codex: Imperial Guard (5th Edition), pg. 23
938.M41 The Battle for Moden's Ridge on Yaquit 27: Colonel Straken leads the Catachan II in a charge that exterminates the L'Huraxi invaders, who outnumber the Imperial Guardsmen more than ten to one. Codex: Imperial Guard (5th Edition), pg. 23
939.M41 While serving with the 70th Luther McIntyre regiment on V'run, responding to Ork attacks occurring throughout the Segmentum Solar, Commissar Yarrick learns the Ork language from a captured greenskin. Codex: Imperial Guard (5th Edition), p. 23
A Chaos Space Marine ambush kills Dark Angels Supreme Grand Master Naberius. Azrael leads the Deathwing to recover his body and is named his successor. Codex: Dark Angels (6th Edition) pg. 25
940.M41 Tzeentch cultists revolt on the Imperial planet Chicano. World lost. Realm of Chaos, [Needs Citation]
The conquest of Atria IV grinds to a halt outside the Palace of Hate, impregnable to the Imperial forces. Codex: Imperial Guard (5th Edition), p. 23
941.M41 The Second War for Armageddon. A massive Ork Waaagh! led by Ghazghkull Mag Uruk Thraka assaults the hive world Armageddon Secundus. Overlord Herman von Strab's forces are saved by Commissar Yarrick's leadership, buying enough time for elements from the Blood Angels, Ultramarines and Salamanders Space Marine Chapters to arrive and push the Orks off-world. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Imperial Guard (5th Edition), pg. 24
942.M41 Eldar Commander Yriel is the leader of the Craftworld Iyanden space fleet. Codex: Eldar (3rd Edition), [Needs Citation]
944.M41 Commissar Yarrick comes out of retirement and devotes the rest of his life to hunting down Ghazghkull Thraka. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Imperial Guard (5th Edition), pg. 24
Balur Crusade. Marneus Calgar is elected leader of the Space Marine Crusade force operating against worlds along the Eastern Fringes. Operations began with scouring of Ork-held Balur and ending with devastation of Boros. Codex: Space Marines (3rd Edition) pg. 36
945.M41 On Atria IV sappers from the Catachan XXIII breach the walls of the Palace of Hate within a week of their arrival. Codex: Imperial Guard (5th Edition), pg. 23
945-959.M41 Ghazghkull Thraka mounts raids on various planets. Codex: Armageddon, [Needs Citation]
946.M41 Dante, Yarrick and Mannheim monitoring stations are established in the outermost orbit of the Armageddon system. [Needs Citation]
949.M41 The 814th Feast of Blades is held. Only eight of the twelve competing Space Marine chapters are able to attend. The championship is tied between the Imperial Fists and the Crimson Fists. Codex: Space Marines (5th Edition), p. 49
Dark Angels Librarian Ezekiel kills Ork Warlord Groblinik in the Battle of the Sularian Gate, ending his Waaagh! Codex: Dark Angels (6th Edition) pg. 25
951.M41 The Amar secession is brought to a swift end by the rapid strikes of the Howling Griffons chapter. Codex: Space Marines (5th Edition), pg. 49
954.M41 The Fall of Rogue's Spire. Waaagh! Dethrekka attacks the sparsely defended planet, and only the fighting retreat by the Sable Swords allows the Explorator and Mechanicus research teams to escape. Codex: Space Marines (5th Edition), pg. 49
On the planet Cyriax, something huge and terrible awakens beneath Hive Necros, killing hundreds of the city's inhabitants. Great Wolf Logan Grimnar sends his elite Thunderwolf Cavalry to hunt down the Abomination of Cyriax. Codex: Space Wolves (5th Edition), pg. 20
c.955.M41 A daemon invasion of the agri-world Gheistos ends with exterminatus. Codex: Chaos Daemons (6th Edition) pg. 22
955.M41 The Imperial Fist siege of the mega-fortress Fort Mork is nearly overwhelmed when thousands of Orks pour from the gates in a counter-attack. Stronghold Assault, p. 7
956.M41 The Kieldar Rebellion is crushed by a combined force of the Imperial Guard. Codex: Imperial Guard (5th Edition), pg. 24
962.M41 The Imperial base on Buca III is annihilated by an Ork asteroid base. The action is ascribed to Ghazghkull Thraka. [Needs Citation]
963.M41 The Fire Hawks mobile chapter fleet is sent to Crow's World sector to retaliate against Eldar pirates. En route, the entire chapter is destroyed in the warp. White Dwarf 99 (UK), Legion of the Damned; Codex: Space Marines (3rd Edition), [Needs Citation]
The Ultramarines clash with Tau colonisation forces on the world of Malbede; both armies later unite against Necron awakening. The Tau escape the planet, which is destroyed in an exterminatus ordered by Marneus Calgar shortly afterwards. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Space Marines (5th Edition), pg. 40
Space Wolf Thorgir Redhand is the lone survivor when his Thunderhawk crash-lands on Isoulde, shot down by an enormous dragon. Thorgir slays the dragon, collapsing one of the planet's cathedrals down on both of them. He is dug out, still alive, by the grateful populace. Codex: Space Wolves (5th Edition), pg. 20
964.M41 Darnath Lysander of the Imperial Fists escapes from the Iron Warriors' stronghold on Malodrax and returns to his chapter, though it will be almost a year before he is pronounced free of chaotic taint and fit to return to duty. Codex: Space Marines (5th Edition), pg. 49
966.M41 Lysander leads the Imperial Fists to Malodrax and scours the Iron Warriors from the planet. Codex: Space Marines (5th Edition), pg. 49
Wolf Lord Gunnar Red Moon takes battle to the Tau's hidden underwater cities on the Ocean World Kvariam Alpha, driving Land Raiders straight across the seabed. The Tau flee when the Wolves crack the domes of their cities. Codex: Space Wolves (5th Edition), pg. 20
During an attack on the Imperial city of Chalior, the Eldar Phantom Titan Heart of Eldanesh is destroyed by a Vortex Missile launched from the Grand Redoubt protecting the city. Stronghold Assault, p. 7
967.M41 Xenos raiders capture the Shadow Wolves strike cruiser Purest Intent with all hands. Helsreach Chapter Five
968.M41 The Khai-Zhan rebellion. Rebels capture every major population centre in one night. An Imperial Guard counter attack takes the capital city of Vogen after a series of brutal street battles. The entire planet is recaptured within a month, but at the cost of nine-tenths of the regiments despatched to Khai-Zhan. Codex: Imperial Guard (5th Edition), pg. 24
969.M41 The Death Guard battleship Terminus Est, the flagship of Typhus, is spotted in the Cando system. The Zombie Plague sweeps across the system in the following months. Warhammer 40,000 5th Edition Rulebook pg. 128
970.M41 A Necron Tomb awakens on Bellicas, the home world of the Emperor's Swords chapter. Not one Space Marine survives. Codex: Space Marines (5th Edition), pg. 49
971.M41 The Ork Wazdakka Gutsmek begins his plan to create an interstellar "supa'eyeway" through the Warp. Warhammer 40,000 5th Edition Rulebook pg. 128
972.M41 Imperial agri-world Chigon 17 is overrun by Orks under Ghazghkull Thraka using guerrilla tactics. [Needs Citation]
973.M41 Thousands of daemonic incursions cause huge amounts of damage and sow many seeds of future corruption. Warhammer 40,000 6th Edition Rulebook, pg. 175
974.M41 The Damnos Incident. The Ultramarines Second Company, led by Captain Cato Sicarius, rescues survivors from the doomed world of Damnos as the Necrons on the planet awaken. Codex: Space Marines (5th Edition), pp. 38-40
975.M41 The Cadian fortress-world Lutoris Epsilon is lost to Khorneate temptation initiated by Skarbrand the Bloodthirster. Warhammer 40,000 5th Edition Rulebook pg. 128
A squad of Cadian Whiteshields, led by the young Ursarkar Creed, are hurled into the five-year Drussite Crusade. By the end of the campaign, Creed has been promoted to Captain. Codex: Imperial Guard (5th Edition) pg. 24
Eldar craftworld Lugganath falls to the Brittle Coma. Its seers project themselves into the Garden of Nurgle in search of Isha and are lost. Codex: Chaos Daemons (6th Edition) pgs. 15, 22
Commander Shadowsun earns her name when Vior'la sept leads the defence against the largest Ork Waaagh! to attack the Tau Empire. Codex: Tau Empire (6th Edition) pg. 29
976.M41 Hive Fleet Perseus is detected by the Ultramarines. Marneus Calgar is severely mauled in a skirmish against Tyranids. White Dwarf 97, Ultramarines, [Needs Citation]
978.M41 Commissar Yarrick is captured at Golgotha and his personal Baneblade, the Fortress of Arrogance, is destroyed. Yarrick escapes a few weeks later under mysterious circumstances, but the planet is completely overrun by the Orks. Codex: Imperial Guard (5th Edition) pg. 24
979-988.M41 The Damocles Gulf Crusade. Several Imperial worlds defect to the Tau Empire, initiating the prolonged crusade, which is abandoned when Hive Fleet Kraken emerges in the Eastern Fringe. Codex: Imperial Guard (5th Edition) pg. 24
980.M41 Chaos Lord Brule and his Chaos Space Marines are destroyed on Treconodal by a combined force of the Cadian 8th and the Terrax Guard. Codex: Imperial Guard (5th Edition), p. 24
The Promethean War. The Salamanders fight an urban war against the Black Legion on Heletine. The Order of the Ebon Chalice arrives to reinforce the Space Marines and together push forward, but their advance is stopped by Daemon Prince Lord Gralastyx and his Chaos Space Marines and the Imperium forces are nearly defeated. Saint Celestine appears suddenly and fights through the hordes and eventually kills Gralastyx and turns the tide of the battle. She disappears again just as suddenly. Codex: Sisters of Battle (5th Edition), [Needs Citation]
981.M41 Durlan Occellati discovers warp route into Wheel of Fire Book of the Astronomican, [Needs Citation]
Taelos of the Imperial Fists takes a warrior pilgrimage through the Maelstrom, Choria, Fell Heart, and Golgotha Codex: Space Marines (4th Edition), inside back cover
The Battle of Parenxes. Red Corsairs lure the Space Wolves cruiser Wolf of Fenris into a trap, where they board the ship and Huron Blackheart kills Gnyrll Bluetooth. As their situation becomes clear, the few surviving Wolves turn to the enemy side, and the Wolf is captured. Codex: Space Wolves (5th Edition) pg. 20
982.M41 Last encounter with Hive Fleet Perseus, which drifts outsystem. [Needs Citation]
983.M41 The Fire Hawks are declared lost in the warp. [Needs Citation]
Ragnar Blackmane avenges the death of his Wolf Lord, Berek Thunderfist, by slaying the Chaos Champion Ghorox Bloodfist in single combat. Ragnar and his handpicked force later defeat Ghorox's allies from the Word Bearers during the Gravespite Massacre. Ragnar is acclaimed Berek's successor. Codex: Space Wolves (5th Edition) pg. 20
983-985.M41 A Hrud migration is halted, due in no small part to the actions of the Cadian 8th and the tactical brilliance of Ursarkar Creed. Codex: Eye of Terror, pg. 40;
Codex: Imperial Guard (5th Edition), pg. 24
984.M41 Battle of Hell Town. Pyran Dragoons assigned to an Armageddon jungle base desert their posts, leaving the Armageddon Ork Hunters to defend against Ork invasion. [Needs Citation]
A single Silver Sabres Space Marine survives the drop onto the feudal world of Vhospis and rallies the defenders against a daemon invasion. Codex: Chaos Daemons (6th Edition) pg. 23
985.M41 Eldar predations in the Underhives of Cathoria II. Warhammer 40,000 5th Edition Rulebook pg. 128
986.M41 Imperial Battlecruiser Radiant Way wiped out by Ork pirates led by Ghazghkull Thraka. History of the Third War for Armageddon
987.M41 Space Wolves attack the Ork-held planet of Xit; 519th crusade ends in the Wheel of Fire. Book of the Astronomican, [Needs Citation]
A Tyranid invasion destroys the Shadow Wolves Space Marine Chapter on their home world of Varadon. Helsreach Chapter Five
988.M41 Orks of the Charadon empire invade Rynn's World. During the initial invasion the Crimson Fists are nearly wiped out by their own defence missile. Warhammer 40,000: Rogue Trader, [Needs Citation]
989.M41 Helbrecht is elected as High Marshal of the Black Templars and declares a Crusade against the Cythor Fiends of the Ghoul Stars. Codex: Black Templars (4th Edition) pg. 44
Waaagh! Snagrod barrels through the Loki sector, devastating Rynn's World and the Crimson Fists. The Dark Angels reinforce the Crimson Fists to purge the Orks from the sector. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Space Marines (5th Edition) pg. 49; Codex: Dark Angels (6th Edition) pg. 25
The Ultramarines Third Company liberates the Lagan system from the Tau Empire. Codex: Space Marines (5th Edition) pg. 40; Codex: Tau Empire (6th Edition) pg. 29
990.M41 The ancient ruling class of nobility on Rophanon have their lands and power taken away from them when the Adeptus Terra decides to turn the planet into a retirement community for high-ranking clerks and a massive records storage facility. The council of Rophanon instigates a rebellion but Lord General Artemis Blythe just happens to be on the planet recovering from wounds suffered during a space battle. He leads the fight back, when eventually becomes mired in a war of attrition. When Hive Fleet Leviathan emerges near Rophanon the Imperials withdraw and let the Tyranids destroy the planet before letting the Deathwatch deliver the Exterminatus. Tactica Imperialis, [Needs Citation]
The Fire Lords chapter descends on Bellicas and exterminates the Necrons there, avenging the destruction of the Emperor's Swords. Codex: Space Marines (5th Edition) pg. 49
The Dark Eldar noble Zorothriel captures Karanak on a hunt on the Daemon world Khornax. Karanak breaks free and kills everyone onboard Zorothriel's warship. Codex: Chaos Daemons (6th Edition) pg. 23
991.M41 The Martyrdom of Praxedes. Canoness Praxedes of the Order of Our Martyred Lady assists the Imperial Guard on the cardinal world of Okassis against Hive Fleet Kraken. They defeat the first wave only to have the second wave breach the walls of the Ecclesiarchal Cathedral. Praxedes buys precious time for evacuation by slaying a Hive Tyrant, but shortly afterward succumbs to a mortal wound. The disruption caused by the Hive Tyrant's death makes successful the evacuation of the Ecclesiarchy's priests as well as civilians at the space port. Codex: Sisters of Battle (5th Edition), [Needs Citation]
992.M41 The Second Tyrannic War. Iyanden craftworld nearly destroyed by Hive Fleet Kraken. Lamenters and Scythes of the Emperor chapters virtually destroyed. Codex Imperialis, [Needs Citation]
Ursarkar E. Creed annihilates Ulthwé raid on Aurent. Codex: Eye of Terror pg. 40; Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Imperial Guard (5th Edition) pg. 24
Necron Shroud class Light Cruiser encountered in Segmentum Pacificus. Battlefleet Gothic Armada pg. 77
After an eruption on the burial plains of Rhea's World, plaguebearers assault the planet's hives. Codex: Chaos Daemons (6th Edition) pg. 23
Roghrax Bloodhand swears to Khorne that he will take a skull from every warrior species in the galaxy. He directs his fleet to the Eastern Fringe so he can take skulls from the encroaching Tyranid forces. Codex: Chaos Space Marines (6th Edition) pg. 26
993.M41 Commissar Ciaphas Cain retires from active duty and is appointed an instructor at the Schola Progenium on Perlia. For the Emperor (Novel) by Sandy Mitchell, Editorial Note before Chapter One;
Cain's Last Stand (Novel) by Sandy Mitchell, Chapter One
Kraken devastates hundreds of worlds before it is halted. The Eldar Craftworld Iyanden is ravaged, and two Space Marine Chapters are all but wiped out, the Scythes of the Emperor and the Lamenters. Codex: Space Marines (5th Edition) pg. 40
Defence of Ichar IV. Marneus Calgar acts as supreme commander in defence of Ichar IV, a vital industrial world on the Eastern Fringe. Tyranid invaders from Hive Fleet Kraken are held in check by the combined efforts of Space Marines, Imperial Guard and alien Eldar forces. Warhammer 40,000 5th Edition Rulebook pg. 128; Codex: Space Marines (5th Edition) pg. 40
Iron Warriors Warsmith Vhostok Pistonhand takes control of Diesos and manufactures countless daemon engines. The Ruinous Powers send massive Daemonic legions to free their servants. The war for Diesos ends within a month and then starts anew as the legions fight amongst themselves. Codex: Chaos Daemons (6th Edition) pg. 23
The Tau Empire and Imperium of Man fight over Nimbosa. Commander Brightsword is censured for the Koloth Gorge Massacre. Codex: Tau Empire (6th Edition) pg. 29
995.M41 Battle of Korsk II. Space Marines crush Lord Varlak's rebellion in a major tank battle on the plains of Korsk II. [Needs Citation]
Tau fleet action at the shrineworld Ghola's Hope. Warhammer 40,000 5th Edition Rulebook pg. 128
Hive Fleet Jormungandr invades the north-eastern boundaries of the Imperium. Space Marines of the Death Spectres and Honoured Sons chapters lead the counterattack. Codex: Space Marines (5th Edition) pg. 49
A Warp-time dilation manifests over Thridia, spawning daemons from the very air. The defenders fall back toward Hive Vertes and right into awakening Necron Warriors. The Necrons attack the daemons, allowing the Imperial Guard to reach the hive. The men are mind-wiped and the battlefields bombarded. Codex: Chaos Daemons (6th Edition) pg. 23
Every volcano on Abheilung erupts at once, killing millions of settlers and spilling forth Daemon engines crafted in the Dark Mechanicum forges under the surface. The planet is scoured of life in less than a month. Codex: Chaos Space Marines (6th Edition) pg. 26
Huron Blackheart attacks Parenxes. During the fight, Red Corsairs strike forces manage to board and capture the Space Wolves strike cruiser Wolf of Fenris. Ibid.; Warhammer 40,000 5th Edition Rulebook pg. 128
996.M41 The Valhallan 18th "Tundra Wolves" wipe out the vanguard of Hive Fleet Jormungandr at Goyan Valley, under the command of Kubrik Chenkov. Codex: Imperial Guard (5th Edition) pg. 24
Bora Culpa incident. Population found vanished after a recon by the Space Wolves. Battlefleet Gothic Armada, pg. 76
A distress signal lures the Dark Angels into a genestealer ambush in the hives of Durganion XIII. The Ravenwing kills the broodlord and the rest of the Dark Angels exterminate the xenos. The entire planet is marked for corruption testing. Codex: Dark Angels (6th Edition) pg. 25
997.M41 Inquisitors Alexio, Credo, and Fortez report having destroyed Temple of the Star Child on Levilnor IV. Warhammer 40,000 3rd Edition Rulebook pg. 272
Hive Fleet Medusa invades the galaxy through the Ghoul Stars. Codex: Tyranids (5th Edition) pg. 29
A hundred thousand daemonettes take up a joking invitation to a party held by the ruler of Ferrite Mons. Even the Vostroyan Firstborn regiment falls to the daemonettes. Codex: Chaos Daemons (6th Edition) pg. 23
The Tau Empire's Third Sphere of Expansion begins. Codex: Tau Empire (6th Edition) pg. 29
The Iron Warriors' Fortress World of Forgefane is besieged by a tendril of Hive Fleet Leviathan. The Iron Warriors welcome the challenge, but are over-matched and within weeks, the last of the world's fortresses, the Ironblood Citadel, falls to the swarms of Raveners. Stronghold Assault, p. 7
138.997.M41 Hive Fleet Leviathan contacts the galactic base of the Imperium, causing destruction in Segmentums Tempestus, Ultima, and Solar. Warhammer 40,000 5th Edition Rulebook pg. 128
221.997.M41 The Ork Warlords Ghazghkull Mag Uruk Thraka and Nazdreg launch an attack upon the power plant of Kadillus Harbour, the capital-city of Piscina IV. The Dark Angels, under the command of Third Company Master Belial manage to disrupt his plans until further Dark Angels reinforcements manage to arrive. The Ork horde is driven off. Ibid. pg. 129; Codex: Dark Angels (3rd Edition) pg. 19; Codex: Dark Angels (6th Edition) pgs. 25, 57
310.997.M41 Ksi'm'yen sept is established and used as a staging ground for the Third Sphere of Expansion. Codex: Tau Empire (6th Edition) pg.29
509.997.M41 A combined Mortifactors and Ultramarines strikeforce defeat a tendril of Hive Fleet Leviathan at Tarsis Ultra. The remainder of the Hive Fleet rampages on, completely unaffected. Warhammer 40,000 5th Edition Rulebook pg. 129; Codex: Space Marines (5th Edition), pg. 40
525.997.M41 Commander Farsight leads the defence of the Farsight Enclaves against Hive Fleet Kraken. Codex: Tau Empire (6th Edition) pg. 29
601.997.M41 Sebastian Yarrick and Ghazghkull come face to face again on the world of Golgotha. Yarrick is captured and tortured but ultimately released - Ghazghkull is planning to invade Armageddon again, and wants a good fight. Warhammer 40,000 5th Edition Rulebook pg. 129
622.997.M41 Golgothan refugees are slaughtered en masse by Dark Eldar raiders on the moon of Jagdor Ibid.
977.997.M41 The Tau Empire resumes the Third Phase Expansion under Commander Shadowsun. They capture several worlds on the Eastern Fringe. Warhammer 40,000 5th Edition Rulebook, [Needs Citation], Codex: Tau Empire (4th Edition), [Needs Citation]
998.M41 The Taros invasion fleet arrives, carrying the 4621st Imperial army to prosecute the Taros Campaign against the Tau. The invasion fails and the Tau annex the world, renaming it T'ros. Codex: Tau Empire (6th Edition) pg.29
Five Necron Shroud-class Light Cruisers attempt to run the Solar Blockade. Two make it to Martian orbit, and one successfully lands in the Noctus Labyrinth before being destroyed. No wreckage is recovered. Battlefleet Gothic Armada, pg.77
Historicus Coran Celecius is tried for heresy after his work links the Aphis hermitage massacre to the Necrontyr and other mysterious past encounters. [Needs Citation]
Inquisitor Lichtenstein is declared Excommunicate Traitoris. [Needs Citation]
Hive Fleet Moloch attacks the galaxy through the Ghoul Stars. Codex: Tyranids (5th Edition) pg. 29
Operation Thunderstorm. A Cadian Army Group lands on the Ork-held world of Golgotha to retrieve the remains of Commissar Yarrick's command tank, the Fortress of Arrogance. Although the Army Group takes horrific casualties, the tank is retrieved and repaired in time to serve as Yarrick's mount during the Third War for Armageddon. Codex: Imperial Guard (5th Edition) pg. 24;
Gunheads (Novel) by Steve Parker
A Tyranid splinter fleet invades the Ice World of Shadrac. A company of Space Wolves appears unexpectedly to reinforce the small Imperial Guard force there. Only a handful of warriors escape, and Shadrac is lost, but the casualties inflicted on the Tyranids is enough to give the Hive Mind pause. Codex: Space Wolves (5th Edition) pg. 21
The Dark Angels and Black Templars come to blows over the handling of a prisoner. Inquisitor Archibald is assigned to lead an inquiry. Codex: Dark Angels (6th Edition) pg. 25
757.998.M41 The Third War for Armageddon begins. Having learned from past mistakes, Imperial Commanders commit a ridiculous amount of forces to hold the world, including elements from more than twenty Space Marine chapters. It drags on for months in a bloody stalemate, and soon Ghazghkull grows bored and leaves his generals to finish the fight while he goes looking for other worlds to conquer. Sebastian Yarrick joins the Black Templars' Crusade and gives chase. Warhammer 40,000 5th Edition Rulebookpg. 129; Codex: Armageddon, [Needs Citation]; Codex: Imperial Guard (5th Edition) pg. 24; Codex: Space Marines (5th Edition) pg. 49
871998.M41 Galdemor is host to a three-way war between daemonic legions of Slaanesh, Khorne, and Nurgle. Not a single soul survives. Codex: Chaos Daemons (6th Edition) pg. 23
999.M41 The Zeist Campaign sees the Imperium take back the worlds they lost in the Tau Third Sphere Expansion. The highly successful Campaign is led by Captain Cato Sicarius of the Ultramarines' 2nd Company, along with elements from at least nine other Chapters and Imperial Guard Regiments. A thrust into the Tau Empire could not be sanctioned however, as the forces were recalled to their other duties. Codex: Space Marines (5th Edition), p. 48
Justicar Alaric of the Grey Knights accompanies Inquisitor Ligeia on a quest to prevent the Daemon Prince Ghargatuloth from returning to the Materium. The Grey Knights are unable to spare more men while deploying their forces to the Cadian Gate to combat the 13th Black Crusade. Grey Knights (Novel) by Ben Counter, Chapter 2
The Second Siege of Perlia. A splinter fleet breaks off from the main Chaos force spilling from the Eye of Terror under the command of Warmaster Varan and attacks the Perlian subsector, seeking to recover the Shadowlight, an immensely powerful xenos artifact. They are held off by an impromptu force of PDF, skitarii, and Inquisition soldiery, led by retired Commissar Ciaphas Cain and the faculty of the planet's Schola Progenium. The Siege ends when a Necron scouting party appears and annihilates the Chaos forces and recovers the Shadowlight, though the Imperial forces are able to reach safety. Cain's Last Stand (Novel) by Sandy Mitchell, [Needs Citation]
During the 13th Black Crusade, A Cadian battlegroup, "Creed's Blade," volunteers for a suicidal counterattack on the Daemon World of Voidsoul inside the Eye of Terror. The battlegroup is all but wiped out by the Daemonic hosts, until a pack of mysterious wolf-creatures appear and tear into the Daemons. The few surviving Cadians return to the Gate, and their mysterious rescuers are speculated to be brothers of the Space Wolves' lost 13th Great Company. Codex: Space Wolves (5th Edition) pg. 21
Exiled to the Elixir system for a practical joke, Lukas the Trickster and his Blood Claws confront the immense vehicle armoury of Waaagh! Megamek. With a little research, Lukas and his pack infiltrate a Climatrope at the planet's pole with a Jump Pack assault and lower the planet's temperature, crippling the Orks' war machines before the Wolves arrive in the system in force. Codex: Space Wolves (5th Edition) pg. 21
010.999.M41 On Thracia, Idaeus, Captain of the Ultramarines' Fourth Company, passes his captaincy to Uriel Ventris before sacrificing himself in the Taking of Bridge Two-Four, denying a flanking route to the Night Lords before the final Imperial offensive. Codex: Space Marines (5th Edition) pg. 40
103.999.M41 Shas'O'Kais leads the victories that establish the Fi'rios sept. Codex: Tau Empire (6th Edition) pg. 29
4.105.999.M41 Catachan Guardsman Marbo is credited with single-handedly destroying the Ork Gargant Gorkanought, though these reports are dismissed as farfetched by Segmentum Command. Codex: Imperial Guard (5th Edition) pg. 25
303.999.M41 Ultramarines Captain Cato Sicarius leads a Crusade with elements from thirty Space Marine Chapters to halt the expansion of the Tau Empire. The Tau are driven off dozens of Imperial worlds in the Zeist sector, but the Crusade is halted before it can be completed. Codex: Space Marines (5th Edition) pg. 40; Codex: Tau Empire (6th Edition) pg. 29
3.350.999.M41 Colonel Schaeffer leads the 13th Penal Legion into the Daemon World of Fool's Paradise to hunt down the Daemon Prince Mk'lrathirix. Only two survivors return. Codex: Imperial Guard (5th Edition) pg. 25
718.999.M41 Hive Fleet Leviathan invades the Ork Empire in the Octarius system, and war rages with neither side showing any signs of stopping. Warhammer 40,000 5th Edition Rulebook pg. 129
757.999.M41 Commander Shadowsun leads the Tau Empire forces in the Battle of Mu'gulath Bay. Twelve advanced weapon prototypes are deployed, with the only failure being a fusion reactor detonation that destroys the moon. Codex: Tau Empire (6th Edition) pg. 29
3.789.999.M41 Lord Marshal Graf Harazahn of Vostroya assumes control over a scattered Imperial Guard army ground and defeats the Eldar at the Gates of Balcarhsa. Codex: Imperial Guard (5th Edition) pg. 25
854.999.M41 Ultramar is invaded by the Chaos horde known as the Bloodborn, led by Warsmith Honsou and M'kar the Thrice Born. The entire Ultramarines chapter is mobilized to repel the invaders. Marneus Calgar confronts the Daemon Prince on Talassar, sending him back to the Warp, though Honsou apparently escapes. Codex: Space Marines (5th Edition), pg. 40;
The Chapter's Due (Novel)
by Graham McNeill,
Chapters One, Three, Twenty-Four.
884.999.M41 The Nephilim sector trembles as the 5th Company of the Dark Angels and the renegade Crimson Slaughter battle over the Hellfire Stone. Warhammer 40,000 6th Edition Rulebook, pg. 176; Codex: Dark Angels (6th Edition) pg. 25; Dark Vengeance
975.999.M41 The light of the Astronomican grows dim; contact is lost with Ultima Macharia and becomes intermittent with both Macragge and Cypra Mundi. Warhammer 40,000 5th Edition Rulebook pg. 129
2.975.999.M41 The Battle for Tyrok Fields: at the outset of the 13th Black Crusade, a murderous plot kills several members of the Cadian High Command, including the Governor Primus. Ursarkar E. Creed takes command of the confused Imperial forces and routes the traitors, turning a Chaos victory into a Cadian triumph. Creed is appointed Lord Castellan of Cadia. Codex: Eye of Terror pg. 40;
Codex: Imperial Guard (5th Edition) pg. 25
978.999.M41 Dark Eldar raiders cripple the Imperial Navy's port at Bakka. Warhammer 40,000 5th Edition Rulebook pg. 129
3.978.999.M41 The Armageddon 45th Heavy Artillery decimate the Ork hordes of Minerva. Each shell is inscribed with the name of a soldier or civilian killed at Hades Hive during the Third War for Armageddon. Codex: Imperial Guard (5th Edition), p. 25
980.999.M41 The Red Corsairs emerge from the Maelstrom in force and lay siege to several systems, notably the Chogoris, Kaelas, and Sessec systems. The White Scars withdraw from the Armageddon theatre to meet the threat. Warhammer 40,000 5th Edition Rulebook pg. 129; Codex: Space Marines (5th Edition), p. 49; Codex: Chaos Space Marines (6th Edition) pg. 25
982.999.M41 The Great Awakening: a ripple of psychic power flows through the Warp and activates the latent abilities of millions of psykers. Innumerable warp rifts are created and several worlds are lost to daemonic infestation. The Thousand Sons are seen in unprecedented numbers. Warhammer 40,000 5th Edition Rulebook pg. 129; Codex: Chaos Space Marines (6th Edition) pg. 25; Codex: Chaos Daemons (6th Edition) pg. 23
3.982.999.M41 The 56th regiment of the Mordian Iron Guard put down the Komarl Revolt, and, to ensure future compliance, executes ten percent of the remaining population for forgetting their duty to the Emperor. Codex: Imperial Guard (5th Edition), p. 25
5.985.999.M41 The Imperial World of Cytheria defects to the Tau Empire; a guerilla campaign by several Catachan regiments critically undermines the Tau's morale. Codex: Imperial Guard (5th Edition), p. 25
986.999.M41 Tech Priests of the Adeptus Mechanicus discover failures in the mechanisms of the Golden Throne that are far beyond their ability to repair. White Dwarf 342us "Timeline" p. 37
Warhammer 40,000 5th Edition Rulebook p. 129.
987.999.M41 Necron activity detected within 2,000 light years of Terra. Warhammer 40,000 5th Edition Rulebook pg. 129
989.999.M41 The Ultramarines 3rd Company liberate the Lagan system from the Tau Empire. Ibid.
990.999.M41 Eldar forces from the Biel-Tan and Saim Hann Craftworlds destroy both Imperial and Ork worlds surrounding the Octarius system with the intent of denying bio-resources to Hive Fleet Leviathan. Ibid.; Codex: Space Marines (5th Edition), p. 49
6.990.999.M41 The Knights of Blood Chaos Space Marines attacks Ornsworld. Imperial Guard reinforcements do not arrive before ninety percent of the planet's population is killed, a cruel repeat of the events of the Gothic War. Codex: Imperial Guard (5th Edition), p. 25
992.999.M41 The Night of a Thousand Rebellions. Countless worlds across the Imperium fall into unrest and rebellion. Even worlds once thought secure, such as Enceladus, Darkhold and Minisotira, are affected. The homeworld of the Lions Defiant Chapter is lost to anarchy. Communication is lost with large swathes of Segmentum Pacificus. Warhammer 40,000 5th Edition Rulebook, pg. 129; Warhammer 40,000 6th Edition Rulebook, pg. 177; Codex: Chaos Space Marines (6th Edition) pg. 25
993.999.M41 A flood of distress signals and cries for help flood through the Imperium. Entire Astropathic choirs are overloaded and collapse. Anarchy and panic spread as the Imperium's communication systems fail. From Segmentum Pacificus there is only eerie silence... Warhammer 40,000 6th Edition Rulebook, pg. 177
994.999.M41 Huron Blackheart crushes the Marines Errant. After drawing away most of their fortress-monastery's garrison, Blackheart's Night Lords allies infiltrate and bring down its static defenses. The Red Corsairs withdraw with nearly all of the chapter's gene-seed and relics, dooming the Marines Errant to a slow demise. Warhammer 40,000 5th Edition Rulebook pg. 146; Codex: Chaos Space Marines (6th Edition) pg. 25
995.999.M41 Warmaster Abaddon launches the 13th Black Crusade. The armies of Chaos Undivided lay siege primarily to Cadia but attack many of the surrounding worlds as well. Imperial Forces launch a massive counterattack, and eventually push back the tides of Chaos, but only just barely, and at great cost. The Space Wolves' 13th Great Company are amongst the forces seen fighting against the forces of chaos. Codex: Eye of Terror (3rd Edition)[Needs Citation]; Warhammer 40,000 5th Edition Rulebook pg. 129; Codex: Chaos Space Marines (6th Edition) pg. 25
999.999.M41 What is thought to have been a comet hits and destroys the Hive World of Gomorrah, leaving only one survivor. Decades later it was discovered that an Ork/Genestealer Hybrid controlled Space Hulk crashed into Gomorrah as a precursor to a full-scale invasion of the Spetzghasf system. Redemption Corps (Novel), Chapter 3, pg. 75-78 Chapter 6, pg. 207-209 and Chapter 7, pgs. 244-245


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