WW1 Timeline By 22hoc000 Jun 28, 1914 Assassination of Franz Ferdinand Jul 28, 1914 Austria-Hungary declares war on Serbia Aug 1, 1914 Germany declares war on Russia Aug 4, 1914 Britain Declares for war May 7, 1915 The Lusitania is sunk with American Passengers on board May 6, 1917 America declares war on Germany Nov 11, 1918 The Armistice is signed and it becomes a new holiday known as Armistice day
