World War II, 1944–1946
Holt conducted her shakedown cruise off Bermuda, and after a short stay in Boston, Massachusetts, reported to Norfolk, Virginia, on 8 August 1944. Until 19 August, she helped carry out shallow water tests in the Patuxent River, Maryland, and then joined Escort Division 74 at Norfolk. Holt screened the escort carriers Wake Island (CVE-65) and Mission Bay (CVE-59) from Norfolk to Newport, Rhode Island, and departed on 5 September 1944 on anti-submarine operations along the Eastern seaboard. She came upon the torpedoed SS George Ade on 12 September, and joined in the search for the U-boat which had attacked her. The search had to be called off, however, as a hurricane approached the next day. Holt returned to Norfolk, and after escorting coastal convoys to Boston and New York, she sailed from Norfolk for the Pacific.
The escort and her division transited the Panama Canal on 23 October, and arrived at Hollandia, New Guinea via the Galapagos and Society Islands on 21 November. The ship then became a unit of the 7th Fleet, and departed on 28 November to join carrier forces in Leyte Gulf providing protection for the vital military operations ashore. She completed this duty on 11 December, and steamed with a convoy toward Mindoro for the establishment of a motor torpedo boat base on that island. During this invasion, an important step in the retaking of the Philippines, Holt's gunfire protected her supply convoy and shot down several planes attempting to attack the invasion forces during the landings on 15 December. The destroyer escort returned to Leyte with a convoy on 17 December, and remained in San Pedro Bay until 22 December 1944.
Holt's next duty was guarding supply ships on the voyage to Hollandia, and after a stop at Manus Island, she got underway once more from Hollandia on 8 January 1945 with the resupply convoy for Lingayen Gulf. Steaming by way of San Pedro Bay, the task group reached Lingayen on 21 January, and Holt began anti-submarine patrol in support of troop movements ashore. She remained in the gulf until 27 January, downing a suicide plane which nearly crashed her on 23 January, and provided protection for the convoys off the beaches.
Departing Lingayen on 27 January, Holt arrived at San Pedro Bay on 1 February, and after escorting another convoy to Lingayen Gulf, she entered the recently liberated Subic Bay on 12 February 1945. Holt served as an escort to and from the harbor entrance until she steamed from Subic Bay on 27 March to aid in one of the final operations for the securing of Luzon. Arriving off Legaspi on 1 April, Holt provided fire support during the landing that day, and then returned to Subic Bay to convoy supporting forces back to Legaspi for the landings on 7–8 April. Possession of this area allowed American forces to control the shores of San Bernardino Strait, thus shortening the supply routes from Leyte Gulf to the assault areas on the western shores of the Philippines.
Returning to San Pedro Bay, Holt next steamed to Morotai to join a convoy in support of the assault on Tarakan Island, Borneo. The first target in the series of Borneo landings, Tarakan was taken by Australian forces under Marine and Navy air support on 1 May, and Holt arrived with supply ships five days later. The ship was forced to remain constantly on the alert for suicide swimmers and limpet mines while in the area, but departed Borneo safely on 9 May for San Pedro Bay.
After repairs in a floating drydock, Holt was assigned to weather patrol, and cruised the eastern South China Sea, sending reports to help guide movements of the vast fleets then operating in the Pacific. On this duty until 18 December 1945, she departed that date with 75 persons on board for San Francisco via the Marshalls and Pearl Harbor, arriving on 9 January 1946.
United States
South Korea
