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World War I cryptography. With the rise of easily-intercepted wireless telegraphy, codes and ciphers were used extensively in World War I. 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 ...
Code talker. Choctaw soldiers in training in World War I for coded radio and telephone transmissions. A code talker was a person employed by the military during wartime to use a little-known language as a means of secret communication. The term is most often used for United States service members during the World Wars who used their knowledge ...
Trench codes (a form of cryptography) were codes used for secrecy by field armies in World War I. [1] [2] Messages by field telephone, radio and carrier pigeons could be intercepted, hence the need for tactical World War I cryptography. Originally, the most commonly used codes were simple substitution codes, but due to the relative ...
The United States Army 's enlisted rank insignia that was used during World War I differs from the current system. The color scheme used for the insignia's chevron was olive drab for field use uniforms or one of several colors depending on the corps on dress uniforms. The chevron system used by enlisted men during World War I came into being on ...
World War I[ j] or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers. Fighting took place mainly in Europe and the Middle East, as well as in parts of Africa and the Asia-Pacific, and in Europe was characterised by ...
The sets of armies joined battle on both sides. General Pierre Ruffey 's Third Army to the south and Fernand de Langle de Cary 's Fourth Army to the north, fighting Germany's Fourth, led by Duke Albrecht, and Fifth army, led by Crown Prince Wilhelm. [ 6] The German troops started moving through the forest on 19 August.
The total number of military and civilian casualties in World War I was about 40 million: estimates range from around 15 to 22 million deaths [ 1] and about 23 million wounded military personnel, ranking it among the deadliest conflicts in human history. The total number of deaths includes from 9 to 11 million military personnel.
The United States declared war on the German Empire on April 6, 1917, nearly three years after World War I started. A ceasefire and armistice were declared on November 11, 1918. Before entering the war, the U.S. had remained neutral, though it had been an important supplier to the United Kingdom, France, and the other powers of the Allies of ...