1944 June 23: German naval frogmen blow up two bridges on the Orne river, using two torpedoes of 800 kg.[4] 1944 July: There were several attacks by German Neger craft in the English Channel, setting off from Villers sur Mer. On July 8, these attacks badly damaged the cruiser ORP Dragon (which was scuttled on July 20), and sunk the destroyer HMS Isis.