 Three days later, "Frankford" sailed from Plymouth to screen a group of landing craft to the Mediterranean, and on 6 August 1944, she arrived at Naples for the invasion of southern France.Her task force sortied 13 August, and "Frankford" patrolled off the invasion beaches 13 August and the days that followed.On the night of 17/18 August, she and another destroyer engaged a group of enemy torpedo boats, sinking three and capturing one, which later sank.