Joseph Carroll (DIA)
When the U.S. Air Force was established as a separate executive department under the National Security Act of 1947, Secretary of the Air Force W. Stuart Symington, requested FBI Director J. Edgar Hoover to loan General Carroll to the services to organize a U.S. Air Force agency for investigative and counterintelligence functions. He organized and directed this new organization, the AFOSI, along the lines of the FBI rather than the U.S. Army's Criminal Investigation Command (USACIDC or CID). General Carroll was tendered a commission as a colonel, U.S. Air Force Reserve, January 12, 1948. He was ordered to active duty in the grade of brigadier general May 6, 1948, and promoted to major general August 11, 1950.
United States Army Air Service
The seven-year history of the post-war Air Service was marked by a prolonged debate between adherents of airpower and the supporters of the traditional military services about the value of an independent Air Force. Airmen such as Brig. Gen. Billy Mitchell supported the concept. The Army's senior leadership from World War I, the United States Navy, and the majority of the nation's political leadership favored integration of all military aviation into the Army and Navy. Aided by a wave of pacifism following the war that drastically cut military budgets, opponents of an independent air force prevailed. The Air Service was renamed the Army Air Corps in 1926 as a compromise in the continuing struggle.