The Sergeant Hartmann meme features Gunnery Sergeant Hartman, the legendary drill instructor played by R. Lee Ermey in the 1987 film Full Metal Jacket. Ermey, a real-life former drill instructor, improvised much of his dialogue, leading to some of the most iconic insults in cinema history. The meme typically captures the specific moment where Hartman is shouting inches away from a recruit's face. It is used globally to represent aggressive authority, intense discipline, or to mock someone's perceived incompetence. It remains a staple of internet culture for anyone needing to express loud, drill-sergeant-style frustration.