In 1947 she was acquired by the U.S. Army who renamed her USAT Pvt. Elden H. Johnson and retained her in Army service until 1950 when she was returned to the Navy and assigned to the Military Sea Transportation Service (MSTS) as USNS Pvt. Elden H Johnson (T-AP-184).
Built in Oakland, California
USS Pinkney (APH-2) was laid down as Alcoa Corsair (MC hull 176), 3 June 1941, by the Moore Dry Dock Co., Oakland, California; launched 4 December 1941; sponsored by Miss Ruth Grove; designated for U.S. Navy use and assigned the name Mercy. After the bombing of Pearl Harbor, she was renamed Pinkney, 13 August 1942; acquired, by the U.S. Navy, 27 November 1942; and commissioned the same day.
Throughout the remaining battles for the Solomon Islands, among them Munda, Vella Lavella, Shortlands, Bougainville, and the numerous engagements in the "Slot", she brought men, food and ammunition forward and evacuated casualties from field hospitals to better facilities on New Caledonia and in New Zealand. She also transported American and New Zealand nurses to and between various southwest Pacific Ocean hospitals.
By August 1944, island hopping had carried the Allies to and past the Marshall Islands and Mariana Islands. On 8 September, USS Pinkney departed Guadalcanal for the Palaus, the next group en route to the Philippine Islands. On the 15th, she delivered her passengers, men of the 1st Marine Regiment, to LVTs, which took them on to the beaches at Peleliu. She then took up position 6,000 yards off the assault area to expedite offloading of equipment and embarkation of casualties. On the 20th she sailed for Manus Island, whence she returned to the Palaus, again and again, to evacuate the wounded.
Invasion of the Philippines
In early October, she returned briefly to the Solomon Islands, then sailed for Hollandia, then the Philippines. Into November, she evacuated Leyte casualties to Hollandia, Mantis, and New Caledonia. In December, she prepared for the Luzon invasion. On 9 January 1945, she landed Army troops on the Lingayen beaches, and, once again, assumed responsibilities for the care and evacuation of casualties, this time to Leyte.
In late February, while en route to the Solomons, she was diverted to Guam, thence to Iwo Jima. On the 28th, she returned to Guam, disembarked her patients and began preparations for her last campaign, Okinawa.
Okinawa operations
On 1–2 April, USS Pinkney participated in the feints against southern Okinawa, then shifted to the Hagushi assault area where she landed U.S. Marine combatant and hospital units on the 10th. Casualties, from ships and from ashore, were soon filling her hospital wards. Caring for patients and expediting transferral of others to the hospital shipUSS Samaritan, she dodged enemy shells and kamikazes until the 28th.
Struck by a kamikaze
On that day, at 1730, a low-flying kamikaze was spotted closing the ship. Seconds later USS Pinkney was rocked by an explosion and the after-end of the superstructure was walled by a sheet of flame. Ammunition began to explode. Water lines, electrical conduits, and steam pipes ruptured. The crew immediately formed rescue and damage control parties. Live ammunition was thrown overboard. All but 16 patients, killed in the initial explosion, were transferred to safety.
Rescue tugs and landing craft moved in to assist in fire fighting, but the flames continued for another three hours, by which time USS Pinkney had lost 18 of her crew and had taken on a heavy list to port. A jagged hole, 30 feet in diameter, extended from the bridge deck to the bulkhead deck. All wards in the amidships hospital area were burned out.
Return to Stateside for repairs
Temporary repairs took 8 days. On 9 May, USS Pinkney got underway for Saipan en route to the United States. She arrived at San Francisco, California, 8 June, and underwent repairs.
Post-War operations
On 21 October, sailed for the Far East again, this time to carry replacements and occupation troops to Tokyo and Sasebo and return with veterans. By February 1946, she had completed another U.S. West Coast—Far East run. Inactivation followed and on 9 September she was returned to the U.S. Maritime Commission and simultaneously transferred to the Army Transportation Service.
Conversion to U.S. Army use
Converted to an AP by the Puget Sound Shipbuilding and Dry Dock Co., and renamed USAT Pvt. Elden H. Johnson, 31 October 1947, she remained with the Army Transportation Service (ATS) until returned to the U.S. Maritime Commission, thence to the U.S. Navy, 1 March 1950.
As USNS Pvt. Elden H. Johnson (T-AP-184) she continued to serve the U.S. Navy until 1957. On 27 December, she was transferred to the Maritime Administration's National Defense Reserve Fleet and her name was struck from the Navy List. Into 1970, she remained with the NDRF, berthed with the Hudson River group.