The Iron Bulwark - Renegade Iron Warriors
In an alternate timeline, the Warmaster Horus did not succumb to the temptations of Chaos - rather, it was his brother Rogal Dorn who fell, leading to a tumultuous period where the distribution of power and loyalties were in disarray. This series of events culminated in the Dornian Heresy . It is from this timeline that the band calling themselves the Iron Bulwark arose. During a freak warp storm, the Iron Blood and several accompanying battlecruisers were hurled through the fabric between dimensions and cast millenia forward in time, arriving through a hole in unreality in the closing years of the 41st millenium, in a galaxy where it was not Dorn who betrayed the Emperor of Mankind, but Horus. Initial contact with the forces of both Chaos and the Imperium highlighted to Perturabo that this was not the same universe that they were familiar with. Conflicts arose with both sides, and to protect themselves from persecution by the Ordo Hereticus or other branches of the Ecclesiarc...