She conducted training and provided services in Hawaiian waters until 29 August, when she sailed for Japan with occupation troops embarked.

On 1 July 1955, LST–1077 was named Park County (LST–1077) and subsequently moved to Bremerton, Washington, remaining in the Reserve Fleet there, until recalled in 1965 for Vietnam service.

In July 1970, Park County returned to Vietnam from Subic Bay serving as a member of the "Brown Water Navy."

Lieutenant Davis was awarded the Bronze Star for his actions during a fire-fight while the Park County was on her way to resupply a base northwest of Binh Thuy.

Between July 1970 and August 1971, Park County continued to operate out of Vũng Tàu carrying and delivering food, supplies, and ammunition to U.S. Military fire bases and installation throughout the Mekong Delta.

In mid-August 1971, she departed Vũng Tàu for San Diego, California, via Subic Bay, Guam, and Pearl Harbor, Hawaii, where following her arrival the U.S.S.

Park County was decommissioned and ceremoniously turned over (September 1971) to the Armada de México (Mexican Navy or SEMAR) to serve as a Panuco Class Tank Landing Ship.