Gunnery Sergeant Hartman is a fictional character from the film Full Metal Jacket, directed by Stanley Kubrick. He is portrayed by actor R. Lee Ermey, who was a former U.S. Marine Corps drill instructor. Hartman is known for his strict and harsh training methods, aimed at transforming recruits into soldiers during the Vietnam War. In the film, Hartman’s character embodies the tough, no-nonsense approach of military training. His memorable quotes and commanding presence highlight the psychological and physical challenges faced by new recruits. The character has become an iconic representation of military drill instructors in popular culture.