Hamburger Hill a 1987 movie with a big role played by Dylan McDermott.
From IMDB: A brutal and realistic war film focuses on the lives of a squad of 14 U.S. Army soldiers of B Company, 3rd Battalion, 187th Infanty Regiment, 101st Airborne Division during the brutal 10 day (May 11-20, 1969) battle for Hill 937 in the A Shau Valley of Vietnam as they try again and again to take the fortified hill held by the North Vietnamese, and the faults and casualties they take every time in which the battle was later dubbed “Hamburger Hill” because enemy fire was so fierce that the fusillade of bullets turned assaulting troops into shreded hamburger meat.
Sgt. Frantz: All right, listen up. You people will not die on me in combat. You fucking new guys will do everything you can to prove me wrong. You’ll walk on trails, kick cans, sleep on guard, smoke dope and diddely-bop through the bush like you were back on the block. Or on guard at night you’ll write letters, play with your organ, and think of your girl back home. Forget her. Right now, some hair head has her on her back and is telling her to fuck for peace. This is Han. Those of you who are foolish will think of him as ‘gook,’ ‘slope,’ ‘slant’ or ‘dink.’ He is your enemy. He came over on the Chieu Hoi programme, and after he fattens himself on C-rations he will be hunting your young asses in the Ashau Valley. Now forget about this Viet Cong shit. What you’ll encounter out there is hard core NVA, North Vietnamese. Highly motivated, highly trained and well equipped. If you meet Han or his cousins, you will give him respect and refer to those little bastards as ‘Nathanial Victor.’ Meet him twice, and survive, and you will refer to him as ‘MISTER Nathanial Victor.’ Now people, I am sick and tired of filling body bags with your dumb fucking mistakes.