In 1944 Jim Radford was a 15 year old ‘galley boy’ serving with the Merchant Navy on the Empire.
Code-Crackers Destroy U-Boats
The success of Operation Hydra in decoding enemy messages handed the Allies a key advantage in the fight against deadly German U-boats. The hunted had become the hunters. From: WORLD WAR II SPY SCHOOL -- http://bit.ly/1MiWBFj