She sailed from Norfolk 3 April to join a large antisubmarine unit at Guantanamo Bay 7 April. Operating in the central and North Atlantic as part of Operation Teardrop, the escorts of this group combined to sink on 24 April at , after the enemy submarine had torpedoed and sunk . "Core" returned to New York 11 May for repairs and replenishment. Clearing Norfolk 13 June 1945, "Core" arrived at San Diego 25 June. She carried aircraft and aviation personnel to Pearl Harbor and to Samar, returning 30 August. Until 20 October, she sailed between Alameda and Seattle on transport duty then sailed for Yokosuka, Japan, on "Magic Carpet" duty, to return homeward-bound servicemen. She made two such voyages from 20 October 1945 to 18 January 1946. "Core" was placed out of commission in reserve 4 October 1946 at Port Angeles, Washington. The ship was redesignated as a helicopter escort carrier (CVHE-13) 12 June 1955, a utility carrier (CVU-13) 1 July 1958 and finally an aviation transport (T-AKV-41) 7 May 1959. On December 11, 1961, the USNS "Core" docked in the Saigon Port to unload 32 H-21 Shawnee helicopters and more than 400 U.S. soldiers from the 57th Transport Company from Fort Lewis, and the 8th and 9th Transport Companies from Fort Bragg. "Core" was stricken for disposal on 15 September 1970 and sold for scrap in 1971. "Core" received one battle star for World War II service.