The Vinculus Crusade was a Crusade of the Black Templars Space Marine Chapter declared against the Chaotic assassin cult warriors who had plagued the Peleregon Cluster in 833.M41. Black Templars Astartes under the command of High Marshal Ludoldus consented to fight alongside the warriors of Inquisitor Vinculus of the Ordo Hereticus. The Inquisitor, accompanied by a detachment of Adepta Sororitas from the Order of the Bloody Rose, had traced the origins of a network of Chaos Cult assassins to Peleregon IV, a hellish, mountainous world of shifting tectonic plates marred by constantly-flowing rivers of molten lava. The initial Imperial landings were met with little opposition, and eventually, the Black Templars -- including a young Neophyte named Helbrecht -- and the Adepta Sororitas pushed t