Squad won't move as a group

[gmreplay]

I really enjoyed the original MOW but Red Tide is giving me a lot of trouble. I have groups of 6 infantry that I tell to move to a spot on the map, but for some reason the squad won't move as a whole. Only 2 or 3 guys will go, and the rest will just stand there stupidly unless I move them individually. This is really annoying.

I also read that it is possible to disable squads to make the game play more like a regular RTS. How do I go about this?