The 99th Pursuit Squadron (later the 99th Fighter Squadron) was the first black flying squadron, and the first to deploy overseas (to North Africa in April 1943, and later to Sicily and Italy). The 332nd Fighter Group, which originally included the 100th, 301st and 302nd Fighter Squadrons, was the first black flying group. It deployed to Italy in early 1944. Although the 477th Bombardment Group trained with North American B-25 Mitchell bombers, they never served in combat. In June 1944, the 332nd Fighter Group began flying heavy bomber escort missions and, in July 1944, with the addition of the 99th Fighter Squadron, it had four fighter squadrons.