How many Marines died in the Horus Heresy?

How Many Marines Died in the Horus Heresy?

The Horus Heresy was a devastating civil war that took place in the Warhammer 40k universe, resulting in the death of countless Space Marines. But just how many Marines perished during this bloody conflict? In this article, we’ll delve into the numbers and explore the factors that contributed to the high casualty rate.

Largest Legion: Ultramarines

The Ultramarines were the largest Space Marine Legion, with an estimated 250,000 Astartes at the start of the Horus Heresy. 119,422 Ultramarines were killed during the war, with an additional 28,392 rendered combat-incapable. This staggering loss highlights the ferocity of the conflict and the sacrifices made by these brave warriors.

Primarchs and Legions

The Primarchs, genetically engineered super-soldiers, played a crucial role in the Horus Heresy. Nine of the Primarchs, including Horus, Sanguinius, and Ferrus Manus, turned traitor, betraying their oaths to the Emperor and siding with Chaos. Seven loyalist Primarchs remained faithful to the Emperor, fighting against the traitor legions.

Space Marine Casualties

During the Horus Heresy, the Space Marines suffered 845,000 casualties, with many legions decimated. Half a million Imperium soldiers, including civilians and other military units, also lost their lives.

Battle of Calth

The Battle of Calth was a pivotal moment in the Horus Heresy, resulting in catastrophic losses for the Ultramarines. 119,422 Ultramarines were killed, with many more wounded or captured.

Primarch Survival Rate

Only three Primarchs survived the Horus Heresy: Roboute Guilliman (Ultramarines), Leman Russ (Space Wolves), and Fulgrim (Emperor’s Children). Seven Primarchs fell during the war, including Sanguinius, who was killed by Horus himself.

Table: Space Marine Legions and Casualties

Legion Start Strength Deaths Wounded/Captured
Ultramarines 250,000 119,422 28,392
Space Wolves 100,000
White Scars 10,000
Imperial Fists 10,000
Iron Hands 10,000
Dark Angels 10,000
Blood Angels 10,000
Emperor’s Children 10,000
Night Lords 10,000
World Eaters 10,000
Death Guard 10,000
Thousand Sons 10,000

Conclusion

The Horus Heresy was a devastating conflict that claimed the lives of countless Space Marines. The staggering number of casualties highlights the ferocity and intensity of the war, as well as the bravery and sacrifices made by the Space Marines. 845,000 Marines perished during the Horus Heresy, with many legions decimated. Only three Primarchs survived the war, while seven fell. The legacy of the Horus Heresy continues to shape the Warhammer 40k universe, with its consequences still felt centuries later.

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