"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. First came the Marianas operation, including the capture of Tinian, for which she fueled ships at sea in July and August 1944. Based at Manus from 26 August, "Cache" provided essential fuel for the attacks on, and invasion of, the western Caroline Islands, then based at Kossol Roads and Ulithi to support the ships which brought the war back to the Philippines in the assaults on Leyte and Luzon in fall and winter 1944-45. Continuing to operate from Ulithi, she fueled TF 51 for the invasion of Iwo Jima, then put to sea for the great task force raids which prepared the way for, and supported, the Okinawa operation. Later she operated in Okinawan waters, bringing fuel through the hazards of kamikaze attacks unscathed. 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. After carrying fuel to Tokyo Bay in September, she returned to the west coast.