During the war my Grandfather received an official looking letter asking him if he would like to volunteer to join the Royal Navy to do work of a "secretive nature". It went on to say that if he accepted he would be given the rank of 2nd Ltn and the pay to match. My Grandfather had no previous maritime or boating experience but was a qualified Electrical engineer. He decided to decline the offer because he thought that the navy don't just hand out officer posts for nothing and if he took it on his life expectancy probably wouldn't be very long. He always thought that the work probably involved the Germanmagnetic mine; he certainly wasn't wanted for his seamanship. Unfortunately the letter doesn't seem to have survived.