In December of 1944, the new five star officer rank was created, allowing generals and admirals to place a total of five stars on their uniforms and flags. In all, four Army generals, four Navy admirals and one Air Force general have held this rank. General Henry "Hap" Arnold was actually awarded this rank twice. In 1944, he received his fifth star while the air force was still part of the Army, known as the US Army Air Corps. After the Air Force separated from the Army, Arnold became the new service's only five star general on May 7, 1949.