And not to mention the unmentionable in WWII the Merchant Navy had the highest percentage casualties of any of the Service. 1 in 3 were lost .I sailed with a guy in 1964 who had been torpeadoed in the North Atlantic and was one of 4 survivors of his ship, the ship that picked them up was torpeadoed the following night and he was one of 3 from that!!!!. He reckoned he was going to die of old age!!!!