Robert Mayne: Or 'Cap'n'. Mayne is the leader of the SAS, a hardcore veteran in service since the Deutschkrieg (note his introduction in the flashback story scene a while ago, where Van Geyte talks to a young Mayne on the plane to England in the 20s). His name is actually a combination of two famous SAS, although I forgot how I exactly got this info, and even if it's actually correct. If I recall, Lt. Blair Mayne, who formed the SAS and Robert Shelldon, another known SAS hero
Richards: Richards is the team engineer. He is known for his affection to massive explosions and boobytraps, and for his dislike of Mahoney.
Mahoney: Mahoney is the team medic. He is known for his affection to disliking Richards, and his dislike of Richards
Motega: 'Chief' or 'Eagle' is a Native American Seouk who is tall, strong, and a badass sniper. Also collects the scalps of his fallen American enemies, as a revenge to American opression of his people.