Walworth County returned to Little Creek on 8 November 1955 and spent the following months in local waters with trips to Guantanamo Bay and the Caribbean.

[1] In January 1956, as part of LANTRAEX-56, she left Morehead City, NC for Vieques, Puerto Rico carrying tanks in her well deck, trucks and construction equipment topside along with Marines from the 2nd Shore Party Bn.

[citation needed] Walworth County left Norfolk with a load of ammunition on 7 May 1956 and, two weeks later, arrived at the United States naval base at Port Lyautey, French Morocco.

On 9 May 1956, she sailed for Greece and arrived at Piraeus on 30 May 1956 for operations with an amphibious task force of the United States Sixth Fleet which took her to principal ports of the Mediterranean Sea.

From there, she took survey parties to beaching sites in the Chagres River and other places in preparation for Operation Caribex which tested the mobility of American forces in defending the Panama Canal.

[1] Walworth County returned to Little Creek from her Panama cruise on 16 March 1957 and put to sea on 10 April 1957 to participate in a three-phase operation involving the U.S. Marine Corps, the U.S. Army, and the United States Air Force.

There, she loaded Marines and combat cargo in preparation for an amphibious training operation to be held in the Mediterranean with forces of the United Kingdom and Italy.

However, the operation was cancelled because of Middle East tensions, and Walworth County had the distinction of acting as a primary control ship in the initial landing of Marines at Beirut, Lebanon, on 15 July 1958.

[1] Walworth County departed Little Creek on 17 January 1962, embarked Marines at Morehead City, and headed for Guantanamo Bay to participate in Operation Springboard 62.

[1] In May 1962, Walworth County embarked Marines of "Foxtrot" Company, Battalion Landing Team 2/6 and, on 1 June 1962, proceeded to tour the entire length of the Mediterranean from Alicante, Spain, to Marmaris, Turkey, where she operated with combined Turkish and Greek forces.

After extensive exercises, including seven amphibious training assaults on various beaches, she sailed for her home port and arrived at Norfolk on 20 October 1962.

[1] On 21 October 1962, the day after she arrived at Norfolk, Walworth County was called upon to participate in the blockade of Cuba during the Cuban Missile Crisis and operated in the Caribbean with the ready amphibious group until 4 December 1962, when she returned to the United States and debarked Marines at Morehead City.

After entering Gibbs Shipyard at Jacksonville, Florida, on 3 April 1963, she completed her scheduled yard period and sea trials, then headed for Little Creek on 10 June 1963.

During the remainder of 1963, she participated in local operations, visited Rockland, Maine, to obtain tactical data for the LST-1156-class landing ships tank (of which she was a part), and underwent overhaul.

In late August 1964, Walworth County again got underway for a lift to Guantanamo Bay, Cuba, and returned via Miami, Florida, on 13 September 1964.

[1] Walworth County spent a short period in the yard before getting underway on 5 October 1964 for "Steel Pike I," the largest amphibious exercise since World War II.

[1] Walworth County underwent a period of training and upkeep, and then spent the final weeks of August 1966 on a midshipman cruise and taking on board dependents of the crew for a day at sea.

On 26 September 1966, she headed for the Boston, Massachusetts, operating area with civilian technicians and representatives from the Naval Ordnance Testing Laboratory.

After a short trip to New York, she got underway on 8 April 1967 and headed for the Caribbean to participate in the joint services exercise "Clove Hitch III."

[1] Walworth County devoted September and October 1967 to a goodwill tour off Deal Island, Maryland, and Operation "JCOC 37," an amphibious assault off Onslow Beach, North Carolina.

[1] Walworth County got underway on 23 September 1968 for a United States Southern Command deployment as a member of Landing Ship Tank Division 41.

She returned to Rodman Naval Station on 17 November 1968 and, except for four amphibious landings and a round-trip transit of the Panama Canal, remained there until 9 January 1969.

On 30 January 1970, she began a month of tender availability by repair ship USS Vulcan (AR-5), which was moored at the Naval Station Norfolk.

For the remainder of the deployment, Walworth County carried out many and varied missions, ranging from being a home for Smithsonian Institution scientists performing marine biology research to acting as a ferryboat for United States exhibits to a regional fair at Bocas del Toro, Panama.

[citation needed] In May 1972, Walworth County was scheduled for transfer to the Maritime Administration and layup in the National Defense Reserve Fleet at Suisun Bay, Benicia, California, but instead she served in a non-commissioned status with a primarily civilian crew as a cargo ship in the Military Sealift Command (MSC) as a United States Naval Ship, USNS Walworth County (T-LST-1164), from May 1972 until stricken from the Navy List on 1 November 1973.

[1] On 19 June 1974, Walworth County was turned over to the Maritime Administration and berthed at Suisun Bay as part of the National Defense Reserve Fleet.