Caje's full name and rank was Pfc. Paul Lemay, Kirby's was Pvt. William G. Kirby, and Nelson's was Pvt. William Nelson. Littlejohn's first name was never given, and while Saunders on a few occasions was called "Chip" by soldiers who had known him in the past, including Lt. Hanley, who was in the same unit with him when they were NCOs, it was apparently a nickname, and his real first name was never given. In Season 1, Episode 11, "A Day in June", the D-Day invasion was told in flashback. Then-Sgt, Hanley is addressed by a young lady, with whom he was keeping company, as "Gil" when the men are ordered back to their posts.
Sgt. Chip Saunders:
... All right, just knock it off. YOU KNOCK IT OFF! You people make me sick. Go on, look at yourselves. You call yourselves a squad? You're a bunch of GOOF-UPS! Littlejohn, you cause nothing but trouble! You mind everybody's business except your own...
Sgt. Saunders consistently fails to carry spare magazines for his Thompson sub-machine gun.