Ronald Lee Ermey (born March 24, 1944) is an American actor and voice actor, best known for his role as Gunnery Sergeant Hartman in Full Metal Jacket, which earned him a Golden Globe Award nomination for Best Supporting Actor. He is a former United States Marine Corps staff sergeant and an honorary gunnery sergeant; during his tenure in the U.S. Marine Corps, he served as a drill instructor.
who plays the sergeant. in full metal jacket
Ronald Lee Ermey