There was a movie with just two soldiers in it, one a Jap and the other an American Marine. Lee Marvin was in the movie. Infact it was his next to last one.
Platoon
Band of Brothers
Hamburger Hill
We Were Soldiers
Patton
And of course Honors go to Go tell the Spartans
Gladiator(like that chrge through the woods)
The lost Battalion
Sahara(with Bogart)