of the FBI. Military service 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. From the time of his entry on active duty on May 6, 1948, General Carroll served as the first director of AFOSI, creating and organizing this centrally-directed investigative service, establishing district offices to service the air commands in the United States, and furnishing trained specialists to Air Force activities worldwide for the conduct of special investigations. On September 6, 1950, he was appointed deputy inspector general (IG) for security, U.S. Air Force. In this assignment he was responsible for the security and physical protection of Air Force installations and activities against sabotage, espionage, and other hostile threats. In this capacity, he directed AFOSI, the U.S. Air Force Office of the Provost Marshal, and was responsible for all security plans and policy for the U.S. Air Force. Until 1952, General Carroll had been a member of the U.S. Air Force Reserve on active duty, On January 29, 1952, he was granted a commission into the Regular Air Force as a permanent colonel by a special act of Congress. General Carroll was then assigned to Wiesbaden, Germany, April 1, 1958, as deputy commander (rear) for the U.S. Air Forces in Europe (USAFE). He served in that capacity until November 1959 when, under a command reorganization, he was named chief of staff, USAFE. While there, he was stationed with his close friend from seminary, Monsignor, and later major general and Air Force Chief of Chaplains, Edwin R. Chess. On February 1, 1960, General Carroll was promoted to lieutenant general and became The Inspector General of the U.S. Air Force stationed at Headquarters, U.S. Air Force, in Washington, D.C. He remained in that position until October 1, 1961, when the secretary of