I did a just Nam list awhile ago
Nam was a perfect canvas for the new school of 70s and 80s directors to get political themes across, it was also the rock n roll war, when I hear the word Vietnam I instantly picture lush jungles being turned into a carpet of napalm to the sweets sounds of Jimi Hendrix, Motown and the End by the Doors. all these movies have great soundtracks. So Im thinkin...
Essentials, top tier - Full Metal Jacket, Deer Hunter, Apocalypse Now
also great - Platoon, Killing Fields
flawed but worth a look - Casualties of War, Heaven and Earth, Tigerland, Born on 4th july
and then a bonus 'coming home' from war few - First Blood, Coming Home, Jacobs Ladder
Ive never seen Hamburger Hill or We Were Soldiers and cant think of any others
one of these days I might get around to a complete WAR movie megapost, can think of a few from most conflicts.