Duty as station tanker at Efate and Espiritu Santo continued into December, when she sailed to refuel ships at sea.

Cache returned to duty at Eniwetok on 20 June 1944 to begin almost continuous participation in the operations that forced the Japanese back across the Pacific to their homeland and ended the war.

She ended her war service in July 1945 as she sailed with the 3rd Fleet in its final stunning blows against the Japanese home islands.

Cache was decommissioned at San Francisco on 14 January 1946, and was transferred to the Maritime Commission in June 1946 for lay up in the National Defense Reserve Fleet.

She carried oil from Bahrain to Japan and the west coast until 1 October 1949, when she was transferred to the Military Sea Transportation Service.