 Another disaster occurred a month later, when USAAF B-25 Mitchells and RAF Beaufighters sank the cargo ship , which had 2,389 Italian POWs, 71 Greek POWs and 204 German guards on board, of whom only 539 were saved.On 14 September, the first Allied loss occurred, when the Greek submarine RHN "Katsonis", was rammed and sunk by U-boat hunter "UJ 2101".The "Luftwaffe" also intervened on 26 September, when 25 Junkers Ju 88s sank RHN "Vasilissa Olga" and at Lakki Bay, Leros, followed on 1 October by the Italian destroyer and on 9 October sank and seriously damaged the cruiser .