Aside from the usual Suspects that have already been mentioned... Platoon, FMJ, Lone Survivor and American Sniper, etc..... Always have loved the John Wayne movies.. The Green Berets and Sands of Iwo Jima. I think The Guns of Navarone, Lawrence of Arabia and Where Eagles Dare probably deserve a mention.

There are some great movies that have come out on Iraq and Afghanistan that are more of a documentary type format but I have found them to be very entertaining without all the Hollywood unrealistic made up action. As I remember they don't really have that much of a narrator talking over the whole show like something you would watch on regular TV. They were as good as anything mentioned above that is Hollywood Fake in my book.

Check out these three movies/documentary: The Hornets Nest, Restrepo and Korengal