The only movie were no one has a happy ending that I can remember.
To me the ending of this movie especially the very sad ending that leaves your crying cause you know the truth of everything, is just the frosting on the cake of the Day of Infamy. No one got their true love, no one really stood out as a hero, not even Prewitt. He was just a hard head sadyl as Warden said, though he did say he was his friend because he respected Prewitt and maybe hoped he and Prewitt could fight the coming battle side by side with great respect each had earned from the other before the attack.
Nobody won that day. Not in the Movie and not in the Nipponese Ambush. Its just heart breaking to see it on two levels like that , fact and fiction both coming to the same heartbreaking end.