Move all

[Mobhack]

Very, Very rarely to move a platoon of infantry or mech that is WAY in the rear more towards the front, on open terrain where they aren't going to shotgun all over the map, and so usually along a clear road line. (Move all can have weird results if say the southern ones are near a road, the north one decides to loop round a marsh or wood instead)

Never in any circumstance where they may get op-fired at.

So - basically for shifting deep reserves nearer the front, where I cant be bothered to move each unit on its own, and I am reasonably sure the AI wont make too much of a hash of it (e.g there is a road to follow).