Existing comment:
Someone Talked!
In 1942, the Office of War Information began a drive to limit talk about the war. The potential loss of human life became a recurring theme on these security posters. Hundreds of thousands of them were published and displayed throughout the country.
The reading of British codes and analysis of radio traffic by Doenitz's intelligence branch proved far more successful than spies' reports. From the start British codes were broken. With the American and Canadian navies using British ciphers for joint operations, the Germans enjoyed a steady flow of information. The situation continued through the crucial months of the Battle of the Atlantic. Fortunately, the British unit at Bletchley Park resumed reading the German naval codes in December 1942 after a ten-month hiatus, allowing convoys to be diverted to avoid wolf packs. |