On the afternoon of 13 August, in company with four British cruisers, one French cruiser, and four American destroyers, "Quincy" departed Malta for the landings on the southern coast of France, arriving Baie de Cavalaire 15 August. For three days the group provided fire support on the left flank of the U.S. 7th Army. "Quincy" transferred 19 August to TG 86.4, and until the 24th, engaged the heavy batteries at Toulon, St. Mandrier, and Cape Sicie. She steamed westward the afternoon of 24 August to support minesweepers clearing the channel to Port de Bouc in the Marseilles area.