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February 1917
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March 15th 1917
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April 6th 1917
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November 7th 1917
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March 3rd 1918
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March 26th 1918
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April 30th 1918
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November 11th 1918
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Zimmerman telegram handed to the US
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Russia's Tsar Nicholas II abdicates
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United States declares war on Germany
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Lenin's Bolsheviks seize control of Russia
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Germany, Russia make peace (Treaty of Brest-Litovsk)
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German forces begin the Spring Offensive
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The first American combat troops arrive in Europe
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The Allies, Germany sign an armistice