next Pacific deployment came after the invasion of South Korea by the Communists in June 1950. Marsh arrived at Yokosuka, Japan on 7 September, and departed on the 14th for Pusan, where she supplied power to the city for two weeks. On 9 October, she entered Inchon Harbor, and remained as support for that area's defense until the end of the month. She supplied power at Masan, a seaport on Chosen Strait, for a month starting on 9 November, then returned to Pusan where she remained as a ship-to-shore power unit for the remainder of her tour. On 8 February 1951, at Pusan, several of her crew were credited with heroic actions in fighting fires which had broken out in the Army gasoline dump adjacent to the pier where the ship lay. Returning to the West Coast on 26 March, Marsh remained at San Francisco for three months before reporting to the Fleet Sonar School at San Diego. Until April 1952, she conducted training exercises for the school and with other units of the fleet off the southern coast of California. On 15 May 1952, Marsh once again joined the battle line off the Korean coast. She patrolled the west coast, operating primarily in the Sochon-Do area, until the end of May. She then steamed to Okinawa for hunter-killer exercises, returning to Korea on 21 June. Taking up aircraft carrier screen duties, she operated with and in the Yellow Sea. In July, she again headed south, this time to serve with the Formosa Patrol, then on 22 August, returned to the battle line. She patrolled off the west Korean coast initially, but was moved to the east coast in late September to blockade. She participated periodically in the shelling of troop and transportation centers in the Songin and Wonsan areas. On 22 October, she sailed again to the Korean coast where she conducted patrols until steaming for Yokosuka and the United States on 14 November. The following is from the book "Thunder in the Morning Calm", Vanwell Publishing Limited, St. Catharines, Ontario, 1992, at pages 183–186. The destroyer USS "Marsh" was engaged in shelling a railway tunnel on the east coast of Korea at a position known as Package One, on Thursday, 2 October 1952. Several times during the morning "Marsh" had moved further offshore after splashes from North Korean shore batteries seemed to fall too close. Eventually "Marsh" signalled