During World War II, LST-503 was assigned to the Europe-Africa-Middle theater but later changed Asiatic-Pacific theater. She then participated in the Invasion of Normandy from 6 to 25 June 1944.
She participated in the invasion of Okinawa and later took occupation there from 16 May to 30 June 1945. She assigned to Occupation service in the Far East from Occupation 20 September to 3 October 1945, 17 to 28 October 1945, 14 November to 22 December 1945 and 3 to 13 January 1946.
She was commissioned into the Republic of China Navy on 16 September 1958 and renamed ROCS Chung Shu(LST-228) and was subordinate to the Deng Er Fleet Department (136 Fleet Department).
In January 1959, weapons were installed at the Hai No. 1 Plant, and in January 1967, the Xinzhong No. 1 modernization was implemented at the Keelung Taiwan Shipyard and the refit was carried out.
During the naval service period, the ship performed out-of-island transportation, supplementary training, and exercise training. It was able to display mutual assistance, cooperation, and the spirit of unity and struggle, and it was successfully completed.
Due to the gradual decrease in transportation and replenishment tasks, a simple seal was ordered on 16 December 1990.[3]