1944–1945 Diphda sailed from
Norfolk on 15 August 1944, loaded cargo at
Pearl Harbor from 4 to 21 September, then sailed to
New Guinea for practice landings. On 4 January 1945, she departed
Noemfoor Island for the
invasion of Lingayen Gulf. Returning to
Manus on 24 January, she loaded landing craft to replace those transferred at
Lingayen Gulf, then loaded cargo at
Wakde Island for
San Pedro Bay, Leyte, where she arrived on 10 February. probably en route to
Manus Island, August 28, 1945 After training exercises in the
Philippines until 27 March 1945,
Diphda sortied for the
invasion of Okinawa, discharging her cargo in the transport area from 1 to 10 April. She returned to Pearl Harbor on 25 April for voyage repairs and alterations, then continued to the west coast, arriving at
San Francisco on 18 June. She voyaged to
Pearl Harbor carrying ammunition from 8 July to 5 August, then sailed from San Francisco on 13 August with cargo for Manus and
Samar. She carried
Army cargo to Wakanoura Wan,
Honshū, in support of the
occupation of Japan, then embarked homeward bound servicemen at
Okinawa, returning with them to
Portland, Oregon, on 29 November.
1946–1956 Between 11 January and 22 May 1946 and again between 28 November 1946 and 17 May 1947,
Diphda served in the
Far East, carrying cargo to
Guam, Okinawa, and Chinese ports. She transported cargo for the Second
Arctic Expedition to
Point Barrow, Alaska, between 9 July and 11 October 1947, then performed similar service between west coast ports, occasionally cruising as far west as Guam, Pearl Harbor, and
Saipan. In both 1949 and 1950, her cargo duty took her to the east coast, and between 26 May and 20 June 1950, she called at
Whittier and
Kodiak, Alaska. With the outbreak of
hostilities in Korea,
Diphda was assigned to Service Force, Pacific (
ServPac), for duty as an
ammunition ship. She made an emergency delivery of ammunition at
Pusan, Korea, and offloaded the remainder of her cargo at
Yokosuka before returning to San Francisco on 12 September 1950. Six days later, she got underway for an extended tour in Korean waters during which she carried ammunition between depots in Japan and Korea and to combat units and ships. On 26 December, she replenished
heavy cruiser at sea.
Diphda returned to San Francisco on 29 October 1951 for overhaul. From 5 February to 11 November 1952,
Diphda served with the
Military Sea Transportation Service, making shuttle runs from the west coast to the western
Pacific, shuttling between
Oakland, California, and Japanese ports. Except for service as station fleet issue ship at
Sasebo from 12 May to 27 October 1954,
Diphda continued this duty until 2 December 1955.
Diphda was placed out of commission in reserve at
San Diego on 11 May 1956. ==Awards==