Hrm... well, I'll be happy to transfer them to militia. Easy fix there.

As for the vehicle, I can see two workable solutions- maybe they get a non-canon "Gallian light tank" that's more suited against infantry than armor.

Or their tank is wrecked and yeah, need to nick another one.

Either way, if you find this character group acceptable, I would appreciate a Cliff Notes of the story thus far :)