11
As the Emperor of Mankind prepared to lead humanity into a golden age, the Forces of Chaos corrupted Warmaster Horus, sparking a decade long civil war that would be known as the Horus Heresy. Horus’s Traitor Space Marines would battle the Loyalist Marines as the Chaos Legions sought to overthrow the Emperor.
When the Heresy ended, the Imperium of Man would be forever changed….