The regiment then went on to take part in the liberation of Seoul and later in the Chosin Reservoir Campaign. For the next two and one-half years, the 1st Marines continued to engage the North Koreans and Chinese Communists. Following the termination of hostilities in July 1953, the Regiment remained in Korea and acted as a defensive force against possible Communist attempts to rekindle the war. The 1st Marines returned to Camp Pendleton in April 1955. There it stayed for the following ten years, except for a brief deployment to Guantanamo Bay, Cuba and the Caribbean during the 1962 Cuban Missile Crisis.