The Douglas A-1 Skyraider (formerly AD) is an American single-seat attack aircraft that saw service between the late 1940s and early 1980s. The Skyraider had a remarkably long and successful career; it became a piston-powered, propeller-driven anachronism in the jet age, and was nicknamed “Spad”, after the French World War I fighter. It was operated by the United States Navy (USN), the United States Marine Corps (USMC) and the United States Air Force (USAF), and also saw service with the British Royal Navy, the French Air Force, the Air Force of the Republic of Vietnam (VNAF), and others. it has a maximum speed of 322 mph at 18,000 ft and a range of 1,316 mi. It carries an armament of 4 × 20 mm (0.79 in) AN/M3 auto-cannons and has 15 external hardpoints with a capacity of 8,000 lb (3,600 kg) and provisions to carry combinations of bombs, torpedoes, mine dispensers, unguided rockets, and gun pods.