Hap Arnold (nickname)

"Hap" Arnold was the nickname of General Henry Harley Arnold, a pioneering American military aviator and aviation leader. He played a crucial role in developing the U.S. Air Force as a separate branch of the military. Often called the "Father of the Air Force," he helped advance aviation technology and strategy during World War II. His nickname "Hap" is a friendly, informal version of his first name, Henry. Arnold’s leadership, vision, and contributions significantly shaped modern military aviation, making him a key figure in U.S. military history.