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 Air Force Security Forces
On 12 February 1942 the United States adopted the British air defense philosophy. The Army Chief of Staff, Gen. George C. Marshall, approved the allocation of 53,299 African-Americans to the Army Air Forces with the "stipulation that air base defense 'for the number of air bases found necessary' be organized and that 'Negro personnel' be used for this purpose as required." This order formed the Army Air Forces (AAF) air base security battalions in June 1942. Units were deployed throughout the European, Asian and African theaters and designed to defend against local ground attacks. These units were armed with rifles, machine guns and 37mm guns.