 The 4th Marines performed this duty from 2 September 1945 to 14 February 1946 when the 6th Marine Division was deactivated, also dissolving the regiments under its operational command.In 1951 the 4th Marines were reactivated at Camp Pendleton, carrying lineage of both the old and new 4th Regiments.The regiment was assigned to the 3rd Marine Division and moved to Japan in 1952 were it remained until after the Korean Armistice Agreement was signed on 27 Jul 1953.