world war 1 timeline By manuel tonchez Apr 4, 1913 election May 28, 1913 the assassination of archduke Franz ferdinand Aug 4, 1914 america proclaims neutrality in world war 1 Sep 5, 1914 the battle of the marne Feb 21, 1915 the battle of the verdun Mar 24, 1915 the Sussex incident Nov 7, 1915 the re-election of president Woodrow wiilson Jan 17, 1916 the interception of the Zimmermann telegram Jul 1, 1916 the battle of the somme Nov 11, 1916 armistice day ends world war 1 Feb 1, 1917 the declaration of new unrestricted submarine warfare by germany Apr 4, 1917 the United States enters world war 1 May 18, 1917 the selective service act Jun 15, 1917 the espionage act Jul 5, 1917 the landing of the American expeditionary force in france Sep 26, 1917 the battle of Argonne forest Jan 8, 1918 the fourteen points by president wilson Feb 1, 1918 the beginning of the Spanish flu epidemic Mar 3, 1918 Russia pulls out of world war 1 May 16, 1918 the passing of the sedition act Jun 28, 1919 the paris peace conference & treaty of versailles May 7, 51914 the sinking of the lusitania