http://www.seftondelmer.co.uk/10.htm Atlantiksender Our ablest and most resourceful U-boat man was Eddy Mander, a bright little Hamburg guttersnipe who before the war had been a wireless operator and radio mechanic with the Debeg, the German equivalent of Marconi. Mander held the rank of a Flotillen Oberfunkmeister (Flotilla Chief Radio Petty Officer) which was about as high as an NCO could rise. But he was full of bitterness against his own officers and the Nazi leaders. From being a devout Nazi at the beginning of the war his personal experiences had gradually turned him into a gifted and resolute adversary of the Third Reich. Over a British naval transmitter Mander then got his first revenge. With the British to help him he sent out a series of cypher signals which directed two German U-boats to a rendezvous. There they were pounced on by the waiting British. The boats were sunk, their crews joined Mander in captivity. What made Mander invaluable to my team at MB were his technical knowledge, particularly in matters of signals and radar, his wide range of acquaintances among U-boat crews, and his wonderful gift of racy German lower-deck slang. He was an adept at thinking up new grouses. And when it came to suggesting how U-boat men might delay the departure of their ship-and prolong their lives-by petty and unattributable acts of sabotage, not even our own naval experts were more fertile.