The members of the Outcast Dead were once part of an elite Astartes Honour Guard called the Crusader Host stationed on Terra. This unit was composed of representatives from all 18 Legiones Astartes and normally numbered at least 30 members. Although service in the Crusader Host was required on a rotational basis that all of the Legions were required to adhere to, the Host was not required to have a member from each of the Space Marine Legions in its complement. The Crusader Host's main assignment was to act as an honour guard that patrolled the boundaries of the Imperial Palace while acting as representatives at the heart of the Imperial court for their respective Legions. The rotation of Astartes did not happen regularly, as some members of the Crusader Host had been away from their Legio