Five of the aviation cadets at Tuskegee entered advanced flying training with P-40 Warhawks in January 1942. The 100th Pursuit Squadron was activated at Tuskegee on 19 February 1942. It was the second African-American Army Air Forces unit ever to be activated. The first class of African-American pilots at Tuskegee completed advanced pilot training on 7 March. There were only five who completed the training. On 17 April the Air Corps Advanced Flying School at Tuskegee Army Air Field was redesignated as Tuskegee Advanced Flying School. The second class of African-American pilots graduated from flying training on 29 April. By the end of 1942, nine classes of African-American pilots had completed training at Tuskeegee AAF.