World war By Sharif alsuradi 1914 Battle of Tannenberg 1914 Battle of Masurian Lakes Jun 28, 1914 Assassination of Franz Ferdinand Jul 28, 1914 Austria declared war on Serbia Aug 1, 1914 Germany declared war on Russia Aug 3, 1914 Germany declared war on France Aug 4, 1914 British declaration of war Aug 13, 1914 Japan declared war on Germany Nov 2, 1914 Russia declared war on Turkey Nov 5, 1914 Britain and France declared war on Turkey 1916 Romania enter the war Apr 6, 1917 USA declares war on Germany