Following a Bermuda shakedown cruise, Marsh conducted training exercises and escorted convoys along the northeast coast.

Entering the Mediterranean through the Strait of Gibraltar on 9 July, Marsh escorted convoys between North Africa, Malta, and southern Italy until mid-August.

She departed Mers El Kébir, Algeria, on 28 September, transited the Panama Canal in mid-October, and arrived at Eniwetok on 20 December.

Broadcasting propaganda messages in Japanese and Okinawan, she sailed among the various islands of that group, including Asuncion, Anatahan, Alamagan, Sarigan, Maug, and Agrihan, taking on prisoners as they surrendered.

The destroyer-escort returned to the United States in early 1946 for shipyard overhaul at San Pedro, Los Angeles.

None of them were apprehended, but it is known that those who committed the robbery were from the Marsh because a small dinghy belonging to the Marine Detachment was stolen that night as well, and tied up alongside the destroyer.

Marsh returned to her home port, Pearl Harbor, on 31 March 1947, and for the next three years, operated in the Hawaiian Islands and off the coast of California, deploying in 1948 for two months duty at Eniwetok.

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 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.

In July, she again headed south, this time to serve with the Formosa Patrol, then on 22 August, returned to the battle line.

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 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.

At approximately 1300 hours HMCS "Iroquois" (a Royal Canadian Navy Tribal Class destroyer) arrived on the scene in response to the request for assistance.

The injured sailors stood up and the entire gun's crew, including the wounded, started reloading while "A" and "B" mounts re-engaged the shore batteries.

During these WestPac cruises, she conducted oceanographic survey tests concerned with the temperature and content of the waters of the Marianas, and the Marshalls in addition to her regular duties.

On 16 August 1958, she decommissioned at San Diego, but remained in service as an anti-submarine training ship of the Selected Reserve Forces.

Operating out of Subic Bay, Marsh conducted training exercises for and patrolled with units of the South Vietnamese Navy, from 18 March to 21 May.