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By Callie Oettinger
From OurDocuments.Gov:
In January of 1917, British cryptographers deciphered a telegram from German Foreign Minister Arthur Zimmermann to the German Minister to Mexico, von Eckhardt, offering United States territory to Mexico in return for joining the German cause. To protect their intelligence from detection and to capitalize on growing anti-German sentiment in the United States, the British waited to present the telegram to President Wilson. Meanwhile, frustration over the effective British naval blockade caused Germany to break its pledge to limit submarine warfare. In response, the United States severed diplomatic relations with Germany in February.
On February 24 Britain released the Zimmerman telegram to Wilson, and news of the telegram was published widely in the American press on March 1. The telegram had such an impact on American opinion that, according to David Kahn, author of The Codebreakers, “No other single cryptanalysis has had such enormous consequences.” It is his opinion that “never before or since has so much turned upon the solution of a secret message.” On April 6, 1917, the United States Congress formally declared war on Germany and its allies. The Zimmerman telegram clearly had helped draw the United States into the war and thus changed the course of history.
CALLIE OETTINGER was Command Posts’ first managing editor. Her interest in military history, policy and fiction took root when she was a kid, traveling and living the life of an Army Brat, and continues today.
