Air Force book is an institutional history of flight training by the predecessor organizations of the United States Air Force. The U.S. Army purchased its first airplane, built and successfully flown by Orville and Wilbur Wright, in 1909, and placed both lighter- and heavier-than-air aeronautics in the Division of Military Aeronautics of the Signal Corps. As pilots and observers in the Air Service of the American Expeditionary Forces, Americans flew combat missions in France during the Great War. In the first postwar decade, airmen achieved a measure of recognition with the establishment of the Air Corps and, during World War II, the Army Air Forces attained equal status with the Army Ground Forces. During this first era of military aviation, as described by Rebecca Cameron in Training to Fly, the groundwork was laid for the independent United States Air Force. Those were