M34

Year	Event	Source
	Warp Storm Gae-sann envelops the Kai system and absorbs it into the Eye of Terror.	Codex: Chaos Space Marines (3rd Edition, 2nd Codex)
	The Blackstar Crusade. Chaos forces emerge from the Eye of Terror to mount a crusade into the Ganglax Sector. Khorne champion Ekrak conquers M'laan XIII and turns it into a Daemon World.	White Dwarf 246 pg. 60
001.M34	The 4th Black Crusade. Destruction of the Citadel of Kromarch on El'Phanor before crushed.	Liber Chaotica: Khorne, Codex: Chaos Space Marines (3rd Edition, 2nd Codex)
085.M34	The Terrorforming of Atasca IV is carried out.	Codex: Skitarii (7th Edition), The March of Time
101.M34	Dark Angels Supreme Grand Master Armaros contracts Bloodpox while leading the fight against the Death Guard and the Brotherhood of Plague. He immediately passes the Lion Helm to his successor and steps into The Rock's main reactor, killing himself before he can spread the disease.	Codex: Dark Angels (6th Edition) pg. 23
118.M34	In the Hour of Shadow, Chapter Master Khardin Gol of the Black Wings and numerous Imperial lords are assassinated, plunging Lorin Alpha into civil war. The Black Wings pursue the Tenebrae Chaos renegades into the Veiled Region.	Imperial Armour Volume Two: Second Edition - War Machines of the Adeptus Astartes pg. 17
216.M34	While enforcing the quarantine zone around the Pale Wasting, Raukaan Clan ruthlessly exterminates fleeing xenos, as well as the entire Yormethi 26th Imperial Guard regiment.	Clan Raukaan - A Codex: Space Marines Supplement (6th Edition)
230.M34	The Trachesai Massacre. Blood Angels Devastator Squads are noted to rush the enemy to engage in close combat.	Index Astartes II: Blood Angels
303.M35	The Grand Hunt. House Raven and Skitarii fight Eldar Exodites and Craftworld Biel-Tan on Geminex. After securing every bit of hard data they can the Skitarii withdraw, leaving the Knights of House Raven to their doom.	Codex: Skitarii (7th Edition), The March of Time
401.M34	The Howling: A strikeforce of Black Templar Space Marines kill the Cacodominus, a powerful alien psyker; the resultant psychic death-scream burns out the minds of a billion astropaths and disrupts the Astronomican. Millions of ships are lost and entire sub-sectors lose contact with the wider Imperium.	Warhammer 40,000 5th Edition Rulebook
438.M34	A single strike cruiser bearing Black Wings livery returns from the outer void. The handful of survivors refuse to speak of what they had endured to anyone save agents of the Ordo Malleus. As they rebuild from their stocks of gene-seed, the Black Wings declare an eternal oath of vendetta against Tenebrae.	Imperial Armour Volume Two: Second Edition - War Machines of the Adeptus Astartes pg. 17
456.M34	Inquisitor Halleck captures the notorious heretic known as the Angel of Truth. He claims to have broken the Angel but disappears en route back to Terra. The Dark Angels strike cruiser Black Sword of Vengeance investigates and finds no trace of the Inquisitor, his vessel, or his prisoner.	Codex: Dark Angels (6th Edition) pg. 23
490.M34	The Rampagers 6th Company topples the rebel theocracy of Dabenlar III in a single night before brutally purging the population of heresy and asserting recruitment rights over them.	Imperial Armour Volume Two: Second Edition - War Machines of the Adeptus Astartes pg. 17
498-601.M34	Following the campaigns that are later called the Berillia Massacres, the Shining Blades' methods are called into question. They attack their allies and the Red Scorpions are sent to bring them to justice. The Shining Blades reveal their true allegiance to Slaanesh in the ensuing war and declare themselves the Flawless Host.	Imperial Armour Volume Thirteen - War Machines of the Lost and the Damned pg. 21
ca. 500.M34	The Eighth Founding. Space Marine Chapters created in this Founding include the Mantis Warriors and the Angels Revenant.	Imperial Armour Volume Ten - The Badab War - Part Two pg. 64; Imperial Armour Volume Twelve - The Fall of Orpheus pgs. 32-33
600-730.M34	The Iron Warriors on Medrengard come to civil war, shattering into numerous warbands. As abruptly as the fighting began, it stops. Some attribute the violence to the plans of their daemon Primarch Perturabo, in order to cull the weakness from his legion.	Imperial Armour Volume Thirteen - War Machines of the Lost and the Damned pg. 22
647.M34	The Documentarian Lasko Pyre, the only known slave to have escaped the Dark Eldar city of Commorragh, commits suicide.	Codex: Dark Eldar (3rd Edition)
666.M34	The first sighting of a Warp Star after a fierce storm bursts out from the Eye of Terror.	Warhammer 40,000 6th Edition Rulebook, pg. 170
764.M34	The Shattering. Craftworld Lugganath comes under vicious attack from a psychically-shielded fleet of the Emperor's Children.	Codex: Chaos Space Marines (6th Edition) pg. 22
843.M34	The Imperial frigate Hand of Mercy responds to a faint distress call originating from Grendel's World. There they find the entire planet dead, the work of the Night Lords. Observations of the genocide lead to an understanding of how the Night Lords operate.	Index Astartes: Night Lords
934.M34	The Warnings of Ulthwé.	Warhammer 40,000 6th Edition Rulebook, pg. 170
Late M34	Obscuran Uprisings. The Sons of Vengeance crush the Free Council of Hannedra II and then turn renegade.	Codex: Chaos Space Marines (4th Edition) pgs. 17-18, 24)
Late M34	Ecclesiarchy power wanes.	Codex: Sisters of Battle (2nd Edition)
Late M34	The Pale Wasting. Eleven Space Marine Chapters are lost to an unknown enemy originating from the Ghoul Stars.	Imperial Armour Volume Nine - The Badab War - Part One, pg. 118

M33	Timeline	M35