WWII Development of the USAAF Troop Carrier
When World War II began, US air power was still part of the US Army. Many senior commanders believed aviation should be limited to tactical support needs of ground forces. The Army Air Corps (AAC), as it was known in prewar years, struggled to maintain a budget. In the 1930s, it trained only about 200 pilots per year, but the training was rigorous and the pilots were taken from the best candidates. Their training lasted two years, at which point they served one year active duty in either pursuit, attack, bomber, or reconnaissance.