One I saw recently on DVD was When Trumpets Fade. I gagged at what a German bullet did to a US soldier's lower jaw.
To me Das Boot is the all-time fave war movie.
I like also- Battle of Britain, Cross of Iron, Letters From Iwo Jima, The Tuskagee Airmen, Saving Private Ryan, Battle of Midway, Bridge Over River Kwai, Empire of The Sun, Memphis Belle, just to name some.
What I don't like about American movies is the fact Hollywood tries to rewrite history. Don't they know the rest of us are educated? In fact some years ago a survey done on American students revealed that many of them thought WW2 started 1n 1941 at Pearl Harbor.