World War II, 1945

Following shakedown in Chesapeake Bay, LST–1071 steamed north to New York where she took on pontoon gear, LCT sections and LCT personnel. On 27 May 1945 she departed the East Coast for the Panama Canal and Pearl Harbor where she exchanged her LCT cargo and passengers for one complete LCT and Army troops bound for Guam. There, at that Marianas island when World War II ended, she took on 139th Construction Battalion personnel and sailed for Saipan and Okinawa.

Post-war activities, 1945–1946

On 14 September she steamed into Tokyo Bay, from the Ryūkyūs, with Fifth Air Force units en route to occupation duty on Honshū. She completed another Okinawa/Japan run for the Air Force, then steamed to Leyte, whence she carried IX Corps units to Aomori, Japan. Army cargo shuttles in Japanese waters were followed in December by orders to Saipan. From there, on the 27th, she headed back to the United States.

LST–1071 arrived at San Diego on 5 February 1946. On the 10th she moved north to San Francisco, and on the 25th to Portland, Oregon for inactivation. There the LST decommissioned on 10 June 1946 and joined the Pacific Reserve Fleet.

Atlantic Fleet, 1951–1955

LST–1071 recommissioned on 3 January 1951. Following shakedown and cargo runs along the California coast, she sailed for the East Coast, arriving at Norfolk, Virginia on 15 June. The LST then commenced operations out of Little Creek, Virginia as a unit of LST Flotilla 2, Atlantic Fleet. For the next four years, she conducted amphibious exercises along the mid-Atlantic coast and at Puerto Rico, and carried Army personnel and supplies to Labrador and Newfoundland. Named USS Ouachita County (LST-1071) on 1 July 1955, she returned from her last voyage in Canadian waters in September and, in November, steamed to Brooklyn for inactivation overhaul.

Damage Sustained

In early August 1952, LST-1071 sustained ice-related damage while navigating waters off the Northern coast of Labrador. The Officer of the Deck, who was disdained by the crew, did not correct his "wrong" order to turn to Port, rather than Starboard. As a result, the ship went directly into the iceberg. Two other LSTs on the mission pulled the 1071 off the ice. This account was made by a crew member (Richard G. Niehoff) who was on the Counting Tower at the time this event. The ship sailed to the Boston Navy Yard where she was placed in drydock for repairs. The ship was successfully repaired and on 22 September, she resumed her training and supply route that continued to take her around the North American continent.

Decommissioning

With the new year, 1956, she steamed south to Green Cove Springs, Florida, arriving on 31 January and decommissioning on 15 February. She remained there, berthed as a unit of the Atlantic Reserve Fleet until struck from the Naval Vessel Register on 1 November 1959. Her final fate is unknown. One observer believes he went aboard her while she was tied up at Tacoma, Washington, (late fall, 1961) where within the following several years she was either scrapped or converted into a barge by Foss Tug & Barge.