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.
List of lieutenant generals in the United States Air Force before 1960
The United States Air Force originated as the Air Corps of the Regular Army. During World War II the Regular Army was augmented with a larger temporary force of reservists, volunteers, and conscripts to form the Army of the United States. Air personnel in the combined force belonged to the Army Air Forces. After the war, all Air Corps and Army Air Forces personnel split off from the Army to form the independent Air Force.