R. Lee Ermey – Full Metal Jacket
In real life, Ermey was a drill instructor in the Marine Corps and served from 1961 until he was medically retired in 1972. He used his G.I. Bill to study at the University of Manila in the Philippines and appeared in several military movies as a technical advisor but it was his role as Gunnery Sergeant Hartman in 1987 that sparked his acting career.