Yes, "Mega Units" or something of that sort.
As soon as your squads land via drop-pod or whatever, click on each one individually (I use the bar on the right, click on FC, and so on down the list of characters) and press 7 on the numpad.
Hooray, thanks. When I saw "mega units" I assumed it made them all super powerful.. but it's just mega health as far as I can tell. Awesome.