Sunk by gunfire from British warships at Mers-el-Kebir, Algeria on 3 July 1940.
The ship blew up with severe losses. Total killed were 36 Officers, 151 Petty Officers and 825 Seaman.
(Capitaine De Vaisseau Louis Rene Edmond Le Pivain). The commanding officer survived the loss but was injured. The French signed an armistice with the Germans on 24 June, after which her navy no longer formed part of the Allied forces. The Bretagne was therefore neither Allied or Axis when sunk.