 Following her shakedown in the Caribbean, "ATA-204" got underway on 23 February 1945 for the Panama Canal, en route to World War II service in the Pacific Ocean.She operated with the United States Pacific Fleet through the end of hostilities, performing services at locales ranging from Pearl Harbor, Hawaii, to the Marshall Islands.After hostilities ended on 15 August 1945, "ATA-204" returned to the United States at San Francisco, California, late in August 1945.