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Allied Cryptanalysis 🐱

 The British and the Americans also made important contributions to Allied cryptanalysis. The supremacy of the Allied codebreakers and their influence on the Great War are best illustrated by the decipherment of a German telegram that was intercepted by the British on 17 January 1917. 

 The story of this decipherment shows how cryptanalysis can affect the course of war at the very highest level, and demonstrates the potentially devastating repercussions of emplying inadequate encryption. Within a matter of weeks, the deciphered telegram would force America to rethink its policy of neutrality, thereby shifting the balance of the war.