20th Century History By james dergs Jun 28, 1914 The assassination of Archduke Franz Ferdinand Period: Jun 28, 1914 to Jun 28, 1919 world war one Aug 1, 1914 Germany declares war on Russia Aug 3, 1914 Germany declares war on France Aug 4, 1914 Germany declares war on Belguim, a result of this is Britain delcares war on Germany Aug 6, 1914 Austria-Hungary declares war on Russia Aug 26, 1914 Germany defeats Russa in the Battle of Tennenberg, this was a big victory Dec 25, 1914 Christmas Truce Jan 15, 1915 Becomes a total war Feb 4, 1915 Any ship approaching England is considered a legitimate target to Germany Sep 5, 1915 Tsar Nicholas takes command of the Russian armies. Sep 15, 1915 British use gas in battle Feb 21, 1916 the Battle of Verdun Apr 9, 1916 Canadians take Vimy Ridge Feb 1, 1917 Germany again declares unrestricted submarine warfare. Mar 15, 1917 Provisional government is declared byTsar Nicholas II Apr 16, 1917 French kill 25000 of there own men just to move 500 yards Apr 27, 1917 French army goes on strike. Jul 3, 1917 The first wave of the American Expeditionary Force lands in France. Jul 31, 1917 Third Battle of Ypres, Jan 1, 1918 influenza kills more then the war did Mar 21, 1918 Germans launch the first of five major offensives Nov 11, 1918 the war ends as Germany and Allies sign an Armistice.