I really liked two:
1) Sands of Iwo Jima. There is a scene where John Wayne saves another soldier from blowing himself up while training with grenades, but gets slightly injured. Another soldier walks up and says, "hey, they might give you a medal for that." Wayne says "Knock it off."
2) In Harms Way, it showed how some characters you thought would end up unscathed, end up severely injured or dead. War is hell. I think it also had a clip of the Battle of Leyte Gulf, the largest naval battle in American History. I wish someone would make a movie out of that. The book is superb. can't remember the author off-hand.
James Bassett wrote the novel and did the screenplay with Wendell Mayes...
Two of my favorite John Wayne lines came from that film. See if you can place them in the film:
"I'd like to throw you to the fish."
"Egan? Rock. Can you bunk out tonight?"