In 1946, the 31st was reactivated with Alabama and Mississippi units. Mobilized during the Korean War, the division served stateside at Camp Atterbury and Camp Carson. The 31st was demobilized in 1954 and reorganized in Alabama and Mississippi. During the height of the Civil rights movement, Mississippi elements of the division were called up to restore order during the Ole Miss riot of 1962, while Alabama elements were Federalized to ensue school integration during 1963 and to keep order during the Selma to Montgomery marches of 1965. In 1968 the division was eliminated, with its units becoming part of the 30th Armored Division.