 Following the war, the auxiliary remained active in the Pacific, participating in the occupation of Japan and operations in China in 1945-46 and then giving support to Pacific Fleet ships and stations for five years, decommissioning at San Diego on 9 June 1950.The veteran tanker recommissioned on 9 January 1951 for the Korean War.Assigned to the Military Sea Transportation Service, "Monongahela" remained active in the Pacific, supplying U.N. forces in the Far East, until transferred to the Atlantic Fleet in March 1953, joining the 6th Fleet in the Mediterranean for extended operations 13 months later.