
At the very birth of the Imperium of Man, fully half of the Emperor's most trusted Space Marine Legions turned against him in a bitter civil war, becoming Chaos Space Marines. Brother fought brother, and Mankind stood upon the very brink of extinction. Ten thousand years after their defeat, those same traitors still launch their Black Crusades out of the Eye of Terror, intent upon nothing less than the utter destruction of the Imperium and the death of its weakling Emperor.
"We fight the long war, not through vain notions of duty or honour, but through a far purer purpose: hatred. At the height of our glory we were betrayed and cast out by our own kin. Guilliman, Dorn, Sanguinius - these are names I curse. Horus, Perturabo, Angron - these names I revere, names I would follow to the very end. It is that hatred that has sustained me through the long millennia. I tend it with bitterness. I nurture it with the deaths of my former brothers. For I know that when the end is upon us and Horus is returned, then the false Emperor shall be cast down from his sepulchral Golden Throne, and we shall take our rightful place at the side of Horus, the true Emperor of Mankind."
- Ferrous Ironclaw, Warsmith of the Iron Warriors Second Grand Company.
