The division returned to the United States on 21 November 1945, and was inactivated on 12 December 1945. It was reactivated on 1 December 1954 as the 23rd Infantry Division, retaining the name "Americal" as part of its official designation. On 2 December 1954 the 65th Infantry Regiment was assigned to the division. The 23rd Division encompassed geographically-separated units in the Caribbean region. On 10 April 1956, the 65th Infantry Regiment was inactivated at Camp Losey, Puerto Rico, and relieved from assignment to the 23d, which itself was inactivated.