 She sailed out of Ulithi supplying fuel for the U.S. Pacific Fleet Fast Carrier Task Force engaged in the Luzon, Iwo Jima, and Okinawa operations, and air strikes against Japan until the close of the war.After serving as station tanker in Tokyo Bay from 26 September until 28 October 1945, "Chicopee" cleared for San Francisco, arriving 9 November.On 14 February 1946 she was decommissioned at Mare Island and sold through the Maritime Commission for return to her owners, Standard Oil of New Jersey, 1 July 1946.