4057th Imperial Marine Regiment
This Regiment was understrength before the Aslan Ihatei invasions, and was deployed forward into the Trojan Reach Sector, receiving reinforcements from several other Marine units as it did so. These Volunteers were renowned as the dregs of the sending units. Despite this, the Regiment earned a fearsome reputation and was considered so highly that it was deployed as one of two training units under the Regency.
- The 4057th Imperial Marine Regiment was assigned to the 260th Fleet in the Zeng Subsector
- 1132: Renamed as the 4057th Regency Marine Training Regiment and moved to the 222nd (Training) Fleet