The 1st Air Commando Group is an inactive United States Air Force unit. It was last assigned to the Army Service Forces, based at Camp Kilmer, New Jersey. It was inactivated on 3 November 1945. The unit was a United States Army Air Forces group of fighters, bombers, transports, military gliders and small planes operating in the South-East Asian Theatre of World War II. They were part of the U.S. Tenth Air Force providing close air support for the British Fourteenth Army in the Burma Campaign. The Republic P-47 Thunderbolt, also known as the "Jug," was the biggest, heaviest, and most expensive fighter aircraft in history to be powered by a single reciprocating engine. It was one of the main United States Army Air Forces (USAAF) fighters of World War II, and also served with other Allied air forces. The P-47 was effective in air combat but proved especially adept at ground attack. It had eight .50-caliber machine guns, four per wing. When fully loaded the P-47 could weigh up to eight tons. A modern-day counterpart in that role, the A-10 Thunderbolt II, takes its name from the P-47.