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The Zimmermann telegram (or Zimmermann note or Zimmermann cable) was a secret diplomatic communication issued from the German Foreign Office on January 17, 1917, that proposed a military contract between the German Empire and Mexico if the United States entered World War I against Germany.
The decoding by British Naval intelligence of the Zimmermann telegram helped bring the United States into the war. Trench codes were used by field armies of most of the combatants (Americans, British, French, German) in World War I. [1] The most commonly used codes were simple substitution ciphers. More important messages generally used ...
The Zimmerman telegram which was sent by Arthur Zimmermann, proposing an alliance between Germany and Mexico in the First World War.When intercepted by the British, this raw intelligence required decryption, translation and confirmation and then was still just part of the overall case made for US entry into the conflict.
Zimmermann telegram as decoded by Room 40 in 1917. Room 40 played an important role in several naval engagements during the war, notably in detecting major German sorties into the North Sea. The battle of Dogger Bank was won in no small part due to the intercepts that allowed the Navy to position its ships in the right place. "Warned of a new ...
The Battle of Gettysburg (locally / ˈ ɡ ɛ t ɪ s b ɜːr ɡ / ⓘ) [14] was a three-day battle in the American Civil War fought between Union and Confederate forces between July 1 and July 3, 1863, in and around Gettysburg, Pennsylvania.
Alfred Dillwyn "Dilly" Knox, CMG (23 July 1884 – 27 February 1943) was an English classics scholar and papyrologist at King's College, Cambridge and a codebreaker.As a member of the Room 40 codebreaking unit he helped decrypt the Zimmermann Telegram which brought the USA into the First World War. [1]
On Nov. 19, 1863, President Abraham Lincoln delivered his historic Gettysburg Address at the dedication of the Soldiers' National Cemetery in Pennsylvania.
Some historians have argued that the battle was the turning point of the war and that this was the place that represented the Confederacy's last major offensive operation in the Eastern Theater. On the third day of the battle (July 3, 1863), General Robert E. Lee of the Confederate States Army ordered an attack on the Union Army center, located ...