Rapaire, what made you so mad about "Porkchop Hill" and "Hamburger Hill" ? Just curious. I don't think they're close to the "worst."

Among the very best :

Das Boot and Paths of Glory. To End All War.

Saving Private Ryan and The Thin Red Line (1998) have weaknesses (what movie doesn't ?) and aren't thoroughly realistic (what movie is ?), but I think they're a lot more thought-provoking than most. The atmosphere of "TRL" is terrific.

As I said yesterday, "The Victors" is a flawed but essential comment on WWII. (The word that came to mind after I posted is "heavy-handed," but some people do have to be bopped on the head to get the point.) One either appreciates "Apocalypse Now Redux" (the definitive version) as a deliberate satire, or not.

"Twelve O'Clock High" is pretty effective, though some will object that it's about generals rather than enlisted men. "Oh, What a Lovely War" seems utterly insane unless you realize that all the songs and most of the dialogue really are from World War I.

One more "worst" : King of Hearts. Unless you don't count it as a "war" movie. Then it's kind of okay.