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  russian forces invaded the German-held regions
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  the U.S. adopted the policy of neutrally favored by Woodrow Wilson
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  Russias army mounted several offensives
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  the assassination of Archduke was done by Gavril Princip, serbian nationalist member of the black hand assassinated Archduke Franz Ferdinand and his wife link text
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  Austria Hungary declared war until its leader Kaiser Wilhelm II supported their cause
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  world war I was started by the assassination of the archduke
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  Germany invaded France through neutral belgium
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  the British forces confronted the Germany army
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  This took place in the late spring of 1915. german reinforcements helped austria hungary.
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  Germany's strength on the high seas was aided by its fleet of U-boat submarines. The British mounted a surprise attack on German ships.
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  allied forces were staged a full retreated from the shores of the peninsula.
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  German troops launched what would be the last German offensive of the war.
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  the Germans signed a peace treaty with the new Bolshevik government of Russia. link text
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  The first major American offensive of the war.
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  The Americans attacked the Germans
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  Marine Corps attacks the Germans across a field of wheat
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  This ended with the final expulsion of the Germans of the woods.
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  This began with 300,000 troops under the direct command of General Pershing
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  Wilhelms ends all German hope for victory
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  an armistice is signed ending the war
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