 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 137th Wing traces its origins to the World War II 404th Fighter Group, which was allocated to the Oklahoma Air National Guard and re-designated as the 137th Fighter Group on 24 May 1946.