the Zambales area to support landing operations there. At 12:48 on 29 January, she entered Subic Bay. Sproston was believed to be the first United States warship to enter Subic Bay since the Japanese occupation had begun. She continued operations in the Philippine Islands until 18 February when she was assigned to escort duty. Ordered to Guam for a week, she was in Apra Harbor from 25 February to 1 March when she sailed for Milne Bay. By 13 March, she was back in Leyte Gulf. On 21 March, she was underway for Kerama Retto and Okinawa Gunto, Ryukyu Islands. Sproston relieved Heywood L. Edwards (DD-663) on 26 March and began picket and patrol duty. That evening, her guns hit a "Jill" which departed in flames. On 2 April, she provided call fire on Makiminato Saki, destroying two enemy pillboxes and a warehouse. Sproston received damage to her sonar equipment and the Mk 1A main battery computer on 4 April by the near miss of a bomb which exploded off her port beam. There were no casualties, and the sonar equipment was quickly repaired, but the main battery could be fired only by local control. She retired to Guam for repair of her Mk 1A computer and was back on station within two weeks. Off Hagushi Beach on 12 May, she fired 16 rounds at an enemy plane which burst into flames and crashed. On 28 May Sproston and Wadsworth (DD-516) downed two planes within an hour. With supporting fire from Bradford (DD-545), she splashed another on the 29th. On 6 June, she rescued a pilot from escort carrier Gilbert Islands (CVE-107) whose plane had been shot down. On 28 June, while she was steaming independently toward the United States for overhaul, Sproston was signalled, between Saipan and Eniwetok, by Antares (AKS-3), that she was under submarine attack and required assistance. Arriving in the vicinity of the submarine, Sproston made good sonar contact at a range of . At a periscope was observed passing from starboard to port. The destroyer made an unsuccessful attempt to ram the submarine which was then identified as a fleet type. Sproston dropped a full pattern of depth charges, and a large oil slick was later observed. She made six more attacks with negative results. After all her depth charges were expended, a lookout spotted a torpedo wake approaching Sproston, 60° off her port bow.