" From time to time the German U-boat commanders have tried their best to behave with humanity. We have seen them give good warning and also endeavour to help the crews to find their way to port. One German captain signalled to me personally the position of a British ship which he had just sunk, and urged that rescue should be sent. He signed his message “German Submarine”. I was in some doubt at the time to what address I should direct a reply. However, he is now in our hands, and is treated with all consideration. Even "

― Winston S. Churchill , The Gathering Storm (The Second World War, #1)