World War One By jordancadena Jun 28, 1914 Assassination of Archduke Ferdinand Period: Jul 28, 1914 to Nov 19, 1918 War Start to end Jul 30, 1914 Russia Mobilizes Aug 1, 1914 Germany declares war on Russia Sep 10, 1914 Battle of the Marne (1st Battle--use of trench warfare) Apr 22, 1915 Battle German fired shells with chlorine gas and Allied lines ( first time large amounts of gas were used) Apr 6, 1917 United States join war in 1917 declared war on Germany Oct 24, 1917 Battle of Caporetto May 3, 1918 Russia and Germany peace Nov 11, 1918 Armistice Day signed ending fighting Nov 11, 1918 Germany signed an armistice with the allies and end of the war
