Imperial Navy Breachers

The Imperial Navy Breacher teams specialize in ship-to-ship boarding actions, armed with equipment that gives them an advantage in close combat. There is a C.A.T. unit for reconnaissance, and one of the guys even has a shield that looks like a door - it's a real commitment to the atmosphere. Most soldiers can be equipped with combat rifles, and there are free rules for using this unit in Warhammer 40,000 games.