On His Majesty's Silent Service

Of all the Allied fighting service branches in which you wouldn’t have wanted to spend the second world war, probably the grimmest was submarines. Sure, their losses weren’t quite as bad as the German U-boat fleet, where your chances of being killed were four in five. But in the course of the war about one third of British submariners lost their lives; and in the earlier years your chances of coming back from a mission alive were no more than 50/50.