World War 1 timeline By J2112R Jun 28, 1914 Assassination of Franz Ferdinand assassination of Franz Ferdinand Jul 28, 1914 Austria-Hungary attacks Serbia Ausrio hungry attacks serbia Aug 1, 1914 Germany declared war on Russia Aug 3, 1914 Gernany declared war on France Aug 4, 1914 British declared war on Germany and Austria-Hungary Aug 13, 1914 Japan declared war on Germany Oct 29, 1914 Turkey entered the war siding with Germany Nov 2, 1914 Russian declared war on Turkey Nov 5, 1914 Britain and France declared war on Turkey May 7, 1915 Lusitania sinks May 23, 1915 Italy joins the war with Allies Apr 1, 1916 Romania enters the war with the Allies Nov 28, 1916 First airplane raid on London by German Air Force Apr 6, 1917 United States declares war on Germany Oct 30, 1918 Armistice is signed with Turkey stopped the war with Turkey Nov 11, 1918 Armistice Signed - Ends World War I