There was an old war movies. It was about the battle of the bulge, focused on the airborne (I think). It had some cowboy singing a song, was killed in a fox hole. Another was an old man who had false teeth. It's not the Charles Bronson movie "Battle of the Bulge." But if anyone can remember this movie please let me know.

Battleground. One of the best old war movies ever made and my personal favorite.