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Battle of Terra

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Battle of Terra
Visions-large.jpg
The Emperor of Mankind battles Warmaster Horus Lupercal aboard the Vengeful Spirit.
Conflict Horus Heresy
Date M31
Location Terra
Outcome Pyrrhic Imperial victory
Combatants
Imperial Eagle.jpgImperium of Man Chaos.pngForces of Chaos
Commanders
Imperial Eagle.jpgEmperor of Mankind

Bloodangelslogo.pngPrimarch Sanguinius (d)
Impfistslogo.pngPrimarch Rogal Dorn
White Scars Symbol.pngPrimarch Jaghatai Khan
Impfistslogo.pngFirst Captain Sigismund
Bloodangelslogo.pngFirst Captain Raldoron
Bloodangelslogo.pngGuard Commander Azkaellon
Custodesflag.JPGCaptain-General Constantin Valdor

Blackleglogo.gifWarmaster Horus Lupercal (d)

Worldeaterslogo.gifPrimarch Angron
Thousand Sons Cropped.jpgPrimarch Magnus the Red
Empschildrenlogo.gifPrimarch Fulgrim
Deathguardlogo.gifPrimarch Mortarion
Wordbearerslogo.gifPrimarch Lorgar Aurelian
Ironwarlogo.gifPrimarch Perturabo
Khorne mark.pngBloodthirster Ka'Bandha
Blackleglogo.gifFirst Captain Ezekyle Abaddon
Worldeaterslogo.gifCaptain Kharn

Strength
Impfistslogo.pngImperial Fists

Bloodangelslogo.pngBlood Angels
White Scars Symbol.pngWhite Scars
Custodesflag.JPGAdeptus Custodes
1,500,000 Imperial Army troops
Three Titan Legions
Sisters of Silence

Blackleglogo.gifSons of Horus

Worldeaterslogo.gifWorld Eaters
Deathguardlogo.gifDeath Guard
Empschildrenlogo.gifEmperor's Children
Thousand Sons Cropped.jpgThousand Sons
Wordbearerslogo.gifWord Bearers
Ironwarlogo.gifIron Warriors
Nightlordslogo.gifNight Lords

Traitor Army troops
Daemons
Traitor Titan Legions


The Battle of Terra was the penultimate battle of the Horus Heresy. Waged on Terra, the homeworld of humanity, the massive engagement between the forces of the Imperium of Man and the forces of Chaos decided not only the fate of Horus Heresy but also that of humanity.

Contents

Prelude

Following the Drop Site Massacre, the traitorous Warmaster of the Imperium and Primarch of the Sons of Horus, Horus, had crippled three Loyalist Space Marine Legions, a Loyalist Primarch, Ferrus Manus, had fallen in battle, another was severely wounded and a third (Vulkan) was missing in action. The Raven Guard, Salamanders, and Iron Hands had been badly mauled in the massacre. Only the Imperial Fists, Blood Angels, and White Scars Space Marine Legions were in the Sol System in force. The Ultramarines, Space Wolves, and Dark Angels were either too far away or bogged down in their own campaigns to come for aid.[1a]

Facing them were the armies of Chaos under Warmaster Horus which included nine Legions of Chaos Space Marines, traitorous forces of the Imperial Army, Daemonic hordes, and the Titan Legions of the Dark Mechanicum.[1a] Mars, the capital of the Adeptus Mechanicus, had recently fallen to the traitor forces. The situation had become disastrous for the Imperium and the forces of the Emperor. Horus, sensing that he could decisively end the conflict and overthrow the Emperor once and for all, began to move on Terra. Rogal Dorn, Primarch of the Imperial Fists, was given overall command of the defenses of humanity's homeworld while the Emperor himself was busy with his own secret project, the Golden Throne.[1a]

In addition to the loyalist Space Marine forces deployed in the Sol System, the loyalists were bolstered by one and a half million troops of the Imperial Army, three Titan Legions of the Adeptus Mechanicus, and the Adeptus Custodes.[1a]

The Storm Breaks

The siege of the Imperial Palace.

On the thirteenth day of Secundus, the bombardment of Terra began. From orbit, Horus' ships laid down an unrelenting barrage of missiles and energy beams. Striking from Mars, the traitor fleet managed to destroy the vast Imperial defenses on Luna, smash Terra's orbital defenses, and scatter the protecting loyalist fleet in 30 days of space combat[3]. Horus' ultimate objective was the Imperial Palace, seat of the Emperor himself. The orbital bombardment was some of the most intense ever witnessed and shook even the courageous and battle-hardened loyalist Space Marines.[1b]

Amid the intense orbital bombardment, waves of traitor Drop Pods and transport ships were launched from the orbiting fleet and made landfall on Terra's holy soil. Though many were destroyed by loyalist defense lasers, aircraft, and missile silos, many more landed. From them burst the World Eaters, Death Guard, Thousand Sons, Emperor's Children, and Word Bearers Chaos Space Marines led by their respective Primarchs: Angron, Mortarion, Magnus, Fulgrim, and Lorgar. The traitors first objective was to silence Terra's laser defense guns and capture the planets primary spaceports. Across the wide of the plateau surrounding the Imperial Palace a hundred or more battles were being waged as the traitors made their assaults. However in the end, the Eternity Wall and Lions Gate Spaceports fell to an overwhelming assault by World Eaters and Khornate Titans led by Angron.[2] With a landing fields now in his hands, Horus was able to land his Titans and heavy war engines.[1b]

Within a few scant hours the forces of Horus managed to seize control of the spaceports of the Imperial Palace and kill tens of thousands of loyalist warriors, the assault itself led by the World Eaters, Thousand Sons, and Emperor's Children under the personal command of Angron. Supported by Titans and overwhelming numbers of traitorous Imperial Army, Cultists, Daemons, and Mutants, the traitor forces managed to surround its entire circumference. Inside the depths of the Palace itself, the Emperor, attempting to keep the Golden Throne under control, could only brood over the desperate events occurring far above.[1b]

The Imperial Palace under siege[2]

Battle for the Palace

The traditional account of the scene at the Satumine Gate of the Imperial Palace is of the Chaos horde pausing before the walls while Angron roared out Horus' terms of surrender. Coming face to face with Sanguinius high above the walls, the Blood Angels Primarch rejected the demands and the siege of the Imperial Palace soon began.[2]

Horus ordered his army to push on and had the attack on the outer walls of the Imperial Palace be spearheaded by the Death's Head Titan Legion. Losing five Titans within minutes to entrenched loyalist defenses, the traitor forces would not relent and kept hammering away at the palace walls. A counterattack against the Chaos horde's flanks by loyalist titans failed, though the White Scars took advantage of the confusion it caused to sweep down at the traitor forces rear columns and wreak havoc.[2] The Siege of the Imperial Palace soon ground on for many days, with the two primary attacks during this time being made by Angron and his World Eaters supported by Daemon Engines in one sector and the Legio Mortis commanded by Iron Warriors Primarch Perturabo in the other. The Emperor's Children, led by Fulgrim, soon became bored of the stalemate and set off on a bloody orgy against the people of Terra of such depravity and destruction that ten thousand years later, Terrans are still distrustful of Space Marines.[1c]

Meanwhile, while the traitor army had been battering at the Palace walls, Jaghatai Khan and his White Scars Legion had been busy harassing their flanks in a series of hit-and-run attacks. Now the Khan changed plans and launched a lightning nightime raid on the Lions Gate spaceport in cooperation with the 1st Terran Tank Division of the loyalist Imperial Army, easily overrunning the traitor garrison and reclaiming the port in the name of the Emperor. The attack managed to slow the Traitor advance on the Imperial Palace.[1c] In addition, Horus ordered the Death Guard to pull back from the assault on the palace to deal with the White Scars.[2]

The Adeptus Custodes battle Daemons at the Imperial Palace

Under Perturabo's command, a combined assault was launched that finally saw a traitor breakthrough. Perturabo combined an underground assault in tunneler drills with a pinpoint Chaos titan Macrocannon bombardment.[2] The walls of the Emperor's Palace finally broke, unleashing a flood of traitors into the inner courtyards of the Palace. A massive labyrinth of hallways, complexes, courtyards, and buildings, fighting in the outer palace was room-to-room and saw heavy casualties inflicted on the Traitors.[2] Moreover, the inner sanctum of the palace had been heavily reinforced and in the enclosed spaces Traitor titans and heavy war engines became easy prey for the well-prepared loyalists. The Adeptus Custodes made a fierce counterattack at the inner gardens of such brutal efficiency that none of the traitor horde could initially stand against them. However in the end, the Titans of the Legio Mortis proved decisive in a traitor breakthrough. In addition traitor numbers were too great and even the Custodes were overwhelmed. After inflicting horrendous casualties on the traitor forces, so much so that the Chaos Titans could no longer continue to advance,[2] the Custodes would fall back to the final defensive line around the Imperial Palace, the Eternity Gate, manned by the Blood Angels and their Primarch Sanguinius. Perturabo and his Iron Warriors thought that their job had been done, and the Primarch left the battle for the Inner Palace to instead direct a siege against the Imperial Fists Fortress Monastery nearby.[2]

Meanwhile, Magnus the Red and the Thousand Sons finally joined the battle on the Traitor side, attacking the Ultimate Gate of the inner sanctum of the Imperial Palace in conjunction with a horde of Khorne Daemons and World Eaters.[2] As traitorous hordes swarmed towards this final bastion of defense, Sanguinius himself became locked in mortal combat with a mighty Bloodthirster of Khorne, Ka'Bandha, the daemon he had battled at Signus Prime. After a protracted and bloody airborne struggle above the Ultimate Gate, the Primarch broke the Daemons back over his knee.[1c] The defending Blood Angels and Custodes forces were reinforced by the Imperial Fists led personally by Rogal Dorn, which disembarked from the great Sky Fortress, a massive fortified gunship. Though it managed to deliver withering fire and much-needed reinforcements to the loyalist forces and stopped an attempt by Thousand Sons Sorcerers to destroy the inner sanctum in an arcane ritual[2], in the end the Sky Fortress was shot down by the Titans of the Death's Head legion. The ensuing crash detonated the ships great plasma reactors, creating an explosion that ripped a forty three kilometer wide crater outside the palace. Though the blast had wiped out massive numbers of traitors, the loyalist forces now realized that they were cut off from the rest of Earth.[1c]

The Vengeful Spirit

However despite these gains, the situation soon changed for the worse for Horus. He recieved news from his daemonic allies that the Space Wolves and Leman Russ had evaded the Alpha Legion, the Ultramarines under Roboute Guilliman had defeated the Word Bearers at Calth, and the Dark Angels under Lion El'Jonson were also Terra-bound. Horus was furious at the news. He had gambled everything on being able to defeat the forces of Terra before the Emperor could muster help from all the still-loyal Legions. With time against him, it now appeared that the gambit had failed and came up with an even riskier gambit. Lowering the teleportation-inhibiting Void Shields on his Battle Barge, Vengeful Spirit, Horus in effect invited the Emperor to come to him.[1d]

Despite objections by Rogal Dorn, the Emperor decided to willingly fall into Horus' trap knowing all to well what awaited him. Leaving management of the Golden Throne to his trusted subordinate Malcador, the Emperor, Dorn, Sanguinius, as well as an elite force of Space Marine Terminators and Adeptus Custodes teleported directly into the Vengeful Spirit. However the teleportation process had malfunctioned and the loyalist forces were scattered about the daemonically corrupted ship.[1d]

Coming under attacks from all kinds of horrors aboard Horus' flagship, including Daemons, monsters, and Chaos Space Marines, the loyalist forces fought their way across the Battle Barge in search of Warmaster Horus himself. The first to reach the traitorous Warmaster was Sanguinius himself. Refusing a final offer by Horus to join him in his campaign against the Emperor, the heroic Primarch found himself completely outmatched by the Warmaster, now warped by the powers of Chaos, and was struck down.[1d]

When the Emperor finally reached Horus, he witnessed to his horror the mauled corpse of Sanguinius at the traitorous Warmasters feet. Overwhelmed by sorrow, the Emperor was speechless as Horus mocked his once-beloved father, proclaiming himself the rightful ruler of humanity and claiming to have even bound the Chaos Gods to his will. The Emperor could only look on in pity, knowing all to well the trap that had ensnared his son. Stating that Horus had become a slave to Chaos, not the other way around, Horus became enraged and the great duel to decide the fate of humanity finally began.[1d]

Horus and The Emperor meet for their final battle

Though a Psyker of unparalleled might, even the Emperor found himself greatly challenged by the might of Horus and the Chaos energies that swelled within him as the two engaged in a titanic battle of not only Power Sword and Lightning Claw but also psychic power. However even after all that he had done, the Emperor could not bring himself to use his full power and risk killing his beloved son. But the Chaos Gods had no such qualms and gleeful at a chance to finally kill the hated Emperor, fed even more power into Horus. Using the immense power at his disposal, Horus crushed the Emperor's windpipe, severed the tendons of his wrists, broke most of his ribs, plucked out his left eye, and set his hair alight. As if this weren't enough, Horus lifted the Emperor high above his head and brought him down upon his knee, crushing the Emperor's spine. Further punishing his father by ripping one of his arms from its sockets, Horus howled over the beaten body of the Emperor in triumph.[1d]

But suddenly, the beating stopped. A lone Custodian of the Adeptus Custodes had entered the room (while other sources state it was Ollanius Pius, an Imperial Army soldier). Without hesitation, the loyal warrior had charged towards Horus. Breaking out in laughter, the Warmaster blasted apart the warrior in a gaze of psychic energy. This proved to be the decisive moment in which the Emperor finally realized what his son had become. The Horus he had known was truly gone, destroyed by the maddening powers of Chaos. Realizing that he must kill Horus and he would never get another chance, the Emperor used the brief respite to lash out at Horus with his full power. Focusing his psychic bolt into a bolt of pure force, the lance of power blasted straight through the Warmasters heart. Realizing their pawn had failed, the Gods of Chaos retreated from Horus' body. As they did, sanity returned to the Warmaster. In that moment, Horus, realizing the atrocities he had committed, begged the Emperor to strike the finishing blow before the powers of Chaos would take hold over him once more. Focusing the last of his strength into another psychic bolt, the Emperor finally destroyed his repentant son.[1d]

Rogal Dorn and his Terminator escorts would reach the chamber shortly after, discovering the beaten body of the Emperor alongside the remains of Sanguinius and Horus. The Emperor only had enough strength to demand to be taken to the Golden Throne at once. Obeying his beloved master, Dorn and the surviving loyalist forces teleported off the Vengeful Spirit and back to the Imperial Palace. Meanwhile the death of their Warmaster had sent a psychic shock reeling across the traitorous armies on Terra. As the Great powers of Chaos retreated from Horus they took their Daemonic hordes with them. Confusion broke out among the traitor Primarchs and the rebel armies lost all cohesion. At the same time, the Blood Angels began suffering horrific visions of the death of Sanguinius. In what may be the first instance of the Black Rage, the Blood Angels broke ranks and began engaging the traitors in close combat with such savagery it shocked both loyalist and traitor Marine alike. Using this to their advantage, the loyalist forces led a decisive counterattack which finally expelled the traitorous legions from Terra in a bloody rout.[1d]

Aftermath

Though Horus had been slain and the traitorous forces driven from Terra, tragedy was not yet over for the Imperium. Malcador had been reduced to a pile of dust from the strain of controlling the Golden Throne and the Astronomican in the Emperor's absence, and the dying Emperor himself was adamant that he himself be hooked back up to the arcane machine. Issuing his last spoken words to his most trusted followers which had gathered around him, the Emperor left the fate of humanity in the hands of his remaining Primarchs. Becoming silent, for the last ten thousand years he has remained interned on the Golden Throne, sustained by its advanced technology and the daily sacrifice of a thousand psykers.[1e]

The Horus Heresy did not end with the Battle of Terra. The Loyalists still had to drive the remaining rebels from the Imperium, one world at a time. In what became known as the Great Scouring, the traitorous forces of Chaos were eventually driven into the Eye of Terror.[1e]

Sources

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