"Fechteler" operated with the Seventh Fleet in support of United Nations Forces during the Korean War, underwent conversion to a radar picket destroyer from 1 April to 1 December 1953, alternated operations along the west coast and in Hawaiian waters with deployments to the western Pacific with the Seventh Fleet, and participated in Sea Dragon and Market Time operations, patrolled on search and rescue duties and carried out naval gunfire support missions during the Vietnam War.