"American Air Forces" . . . . . "School of Military Aeronautics" . . . . . . . . "Origin of first seven groups shown here" . . . . . . . . "Air Service of the Army Expeditionary Force" . . . . . . "US Army" . . . . . . . "U.S. Air Service's" . "Corps Observation Wing" . . . . "Office of the Director of Air Service" . . . . . . . . . . . . . . . . . . . . . . . . . . . "Morrow Board" . . . . . . . . . "1918" . . . . . . . . . . . . . . . . . . . . . "Air Service, U.S. Army" . . . . . . . . . . . . . . "Air Service of the American Expeditionary Force" . . . . . . . . . "US Army Air Service" . . . . "air service" . . . . "Air Service AEF" . . . . . . . "Air Service" . . . . . . . . "Aerial warfare" . "Lampert Committee" . . . . . . . . . . . . "Air Service's" . . "United States" . . . . . . . . "U.S. Army Air Service" . "US Air Service" . . . . . . "United States Army Air Service" . . . . . . . . . . . . . . . "air corps veteran" . . . "US airfleet" . . "American Air Service" . "Division of Military Aeronautics/Bureau of Aircraft Production dual-authority" . . . . . . . . . . . . . . . . . "9,954 men, 1,451 aircraft (1926)" . . "USAAS" . "U.S. Air Service" . . . . . . . . . . . . . . . . . . . . . . "Chief of the Army Air Service" . . . "Air Service, United States Army" . . . . . . . . "Army Air Service Reserve Corps" . . . . . . . "0024" . . . "0024" . . . . . . "Air Service Officer" . . . . . . . . . . . . . . . . . . "Army" . . . "United States Army Air Service" . . . . . "Army aviation corps" . "1926" . . "U.S. Army Air Service (USAAS)" . . . . "History of the United States Army Air Service" . "Director of Air Service" . . . . . . "Air Service, American Expeditionary Force" . . "U.S. Army's" . . . . . . . . "Army Air Service" . . . . . . . . . . . . . . . . . "United States Air Service" . . . . . . "Chief of Air Service" . "Air Service, National Army" . . . . . . "Air Service of the AEF" . . "195,024 men, 7,900 aircraft (1918)" . . . "aircraft production failures" . "US Air Service's" . . . . . . . . "Chief of the US Air Service" . .