Order of the Ashen Mantle

The Order of the Ashen Mantle guards the Serein Sector of the Ultimate Segmentum. Founded purely for military purposes, it has the dual duties of garrisoning the Brimstone Fortress and maintaining vigil over the Shrine World of Arxis II and the pilgrim route that leads to it. The former is a massive bastion and logistical nod that must remain in imperial hands to be able to support any future large-scale conflict or crusade. The latter is the birth world and later resting place of a famous saint and imperial guard officer, Orellius the Opprobrious.