An Immelmann turn is a tactical aerial maneuver used in aviation, particularly in dogfighting. It involves a half-loop followed by a half-roll, allowing an aircraft to change direction while gaining altitude. This maneuver is effective for quickly repositioning against an opponent. The Immelmann turn is named after the German pilot Max Immelmann, who popularized it during World War I. It is often used in both military and aerobatic flying to enhance maneuverability and gain a strategic advantage in combat situations. Proper execution requires skill and precision to maintain control of the aircraft.