"Dallas" had convoy duty between Norfolk, New York, and New London, Connecticut — also making one voyage to Gibraltar from 3 March to 14 April 1943 — until 9 May 1943, when she departed Norfolk for Oran, Algeria, arriving there on 23 May 1943. She patrolled off the North African coast, then on 9 July 1943 joined Task Force 81 for screening duty during the Battle of Gela from 10 to 12 July during Operation Husky, the Allied invasion of Sicily. She returned to convoy and patrol duties until 7 September 1943, when she joined the escort for a convoy bound for the amphibious landings on the mainland of Italyin Operation Avalanche. "Dallas" screened the transport group during the landings at Salerno on 9 September 1943, and joined a southbound convoy on 11 September 1943, rescuing two downed British airmen on her way to Oran. She escorted reinforcements to Salerno, then served on escort and patrol in the Mediterranean until 11 December 1943, when she got underway for the U.S. East Coast, arriving at Philadelphia on 24 December 1943.