On 24 May 1946, the
United States Army Air Forces, in response to dramatic postwar military budget cuts imposed by President
Harry S. Truman, allocated inactive unit designations to the
National Guard Bureau for the formation of an Air Force National Guard. These unit designations were allotted and transferred to various state National Guard bureaus to provide them unit designations to re-establish them as Air National Guard units. The Kentucky Air National Guard origins date to 9 June 1947 with the establishment of the
123d Fighter Group and is oldest unit of the Kentucky Air National Guard. It was federally recognized and activated at Standiford Field, near Louisville. Its 165th Fighter Squadron, the flying component of the 123d, was equipped with P-51D Mustangs. Its mission was the air defense of the state. 18 September 1947, however, is considered the Kentucky Air National Guard's official birth concurrent with the establishment of the United States Air Force as a separate branch of the United States military under the National Security Act of 1947. ==See also==