United States. Steaming by way of Midway, Pearl Harbor, San Diego, and the Panama Canal, the warship arrived in Charleston, South Carolina, two days before Christmas 1945. After completing inactivation overhaul, Ammen was placed out of commission on 15 April 1946 and was berthed with the Charleston Group, Atlantic Reserve Fleet. 1951–1960 The outbreak of war in Korea in the summer of 1950 and American support for South Korea in that conflict compelled the Navy to expand its active fleet. Preparations for Ammens reactivation began late in 1950, and she was recommissioned at Charleston, South Carolina, on 5 April 1951. Though officially deemed to be active, the destroyer required three additional months of reconditioning before putting to sea. After refresher training out of Guantánamo Bay, Cuba, in July and August, Ammen returned to Charleston in September for a modernization overhaul that lasted until the spring of 1952. Following refresher training in the West Indies, the warship reported for duty with the Atlantic Fleet as an element of Destroyer Division 182 (DesDiv 182) based at Newport, Rhode Island On 26 August 1952, Ammen stood out of Newport bound for her first tour of duty in European waters. She cruised in the Mediterranean with the 6th Fleet until early 1953, participating in various training operations and showing the flag in ports on the European, North African, and Middle Eastern coasts of the Mediterranean. The destroyer returned to Newport in February 1953 and operated with the 2d Fleet until August. On 10 August 1953, she departed Boston for the Far East. The warship served with the 7th Fleet, frequently in waters adjacent to the Korean peninsula, through the end of the year. Ammen concluded her tour of duty in the Orient on 14 January 1954. Making the westward voyage by way of the Indian Ocean and the Suez Canal, she arrived in Newport on 10 March. In April, the warship entered the Philadelphia Naval Shipyard for regular overhaul. She completed repairs early that summer and then conducted refresher training in the West Indies in August and September. That fall, Destroyer Squadron 18 (DesRon 18) was reassigned to the Pacific Fleet. Accordingly, on 30 November 1954, Ammen got underway from Newport in company with her squadron mates to make the transit to San Diego. Upon reporting to the Commander in Chief, Pacific Fleet, after navigating the Panama Canal, DesRon 18 became DesRon 21. In