[Marcello]

"APU on Vasileks aren't a bad idea, maybe the VDV should start tinkering about it..."

The idea was a weapon that could provide direct fire support while retaining indirect fire capabilities and capable of going where the infantry could go (at least in SPMBT terms).A mule mounted recoilless was a possibility but I preferred the rate of fire and high angle of elevation capability of the Vasilek.
It would also have some antiarmor capabilites with HEAT, although that would be a secondary role.
I am not sure if it will actually work well in battle, I have had the time only for testing the basic mechanics and maybe a few skirmishes, as the rest of the OOB still requires some final checks.