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  2. Zimmermann telegram - Wikipedia

    en.wikipedia.org/wiki/Zimmermann_Telegram

    Zimmermann sent the telegram in anticipation of the resumption of unrestricted submarine warfare by Germany on February 1, which the German government presumed would almost certainly lead to war with the United States. The telegram instructed Von Eckardt that if the United States appeared certain to enter the war, he was to approach the Mexican ...

  3. Code (cryptography) - Wikipedia

    en.wikipedia.org/wiki/Code_(cryptography)

    This one says the same with respect to code item number ten. But the meaning of the numbers cannot be deduced through statistical analysis because the code can be changed long before a useful statistical universe can be reached. It's an idiot code... and an idiot code can never be broken if the user has the good sense not to go too often to the ...

  4. World War I cryptography - Wikipedia

    en.wikipedia.org/wiki/World_War_I_cryptography

    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 ...

  5. Raw intelligence - Wikipedia

    en.wikipedia.org/wiki/Raw_intelligence

    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.

  6. Ciphertext - Wikipedia

    en.wikipedia.org/wiki/Ciphertext

    The Zimmermann Telegram decrypted into plaintext (and translated into English). Main article: Cryptanalysis Cryptanalysis (also referred to as codebreaking or cracking the code ) is the study of applying various methodologies to obtain the meaning of encrypted information, without having access to the cipher required to correctly decrypt the ...

  7. Reginald Hall - Wikipedia

    en.wikipedia.org/wiki/Reginald_Hall

    Admiral Sir William Reginald Hall KCMG CB (28 June 1870 – 22 October 1943), known as Blinker Hall, was the British Director of Naval Intelligence (DNI) from 1914 to 1919. . Together with Sir Alfred Ewing he was responsible for the establishment of the Royal Navy's codebreaking operation, Room 40, which decoded the Zimmermann telegram, a major factor in the entry of the United States into ...

  8. Nigel de Grey - Wikipedia

    en.wikipedia.org/wiki/Nigel_de_Grey

    The Zimmermann Telegram was from the German foreign secretary Arthur Zimmermann to the German ambassador Heinrich von Eckardt in Mexico, telling him to offer the Mexican government the return of the states of Arizona, Texas and New Mexico as an inducement to Mexico to side with Germany against the United States.

  9. History of the United States (1917–1945) - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    When Americans read the text of the German offer to Mexico, known as the Zimmermann Telegram, they saw an offer for Mexico to go to war with Germany against the United States, with German funding, with the promise of the return of the lost territories of Arizona, New Mexico, and Texas.