YSE law says that, other than local defense fleets for planets (read: star systems that have their own vassal nation governments like Gashmere), the only permitted military force in the YSE is the actual Star Army of Yamatai. This sounds like it would be adding a second military to Yamatai, which is not legal.
Since the UOCPF was absorbed into the Star Army a few years ago, the former peacekeepers who survived the NMX invasion of the UOC and were still on active duty are mostly there. Maybe we could create a special Star Army task force of them?