 In the night of 12–13 May, "La Combattante" destroyed "S-141", killing Klaus Dönitz, Admiral Dönitz's son in the process.During the night of 27–28 May "La Combattante" met motor torpedo boats "MTB-732" and "MTB-739"; the two groups mistakenly engaged each other, and "MTB-732" was sunk.Under "commandant" André Patou, "La Combattante" took part in "Operation Neptune", providing close fire support to the landing parties during the Battle of Normandy off Courseulles-sur-Mer.