The 6th Black Crusade launched out of the Eye of Terror in 901.M36 was the sixth massive incursion by the Forces of Chaos into Imperial space following the Horus Heresy led by the Warmaster of Chaos, Abaddon the Despoiler. During this campaign, Abaddon visited his wrath upon the treacherous warband of Chaos Space Marines, the Sons of the Eye. The Sons of the Eye were a splinter warband of the Black Legion, founded and commanded by the Chaos Lord Drecarth the Sightless, the Blind Butcher of Irridous VII. Drecarth was a former Battle-Brother of the Sons of Horus who had fought alongside Abaddon during the Great Crusade and the Horus Heresy that followed. Always jealous of the Primarch Horus' favour for the Despoiler, the Sons of the Eye considered Abaddon a usurper when he took command of th