Here is tricky situation:
Our main army is heading for one alliance far away, while one of our conquered setlements got some activity going on, basicly 4 squads heading back to hes colony from where he can threat us and hes setlement smalled down so only thing hes doing atm is creating even more units. we can defend ourself from him but we dont want to loose any army.

so we want to force relocate him, so question -what will happen with hes units after force relocating?

they stay there