WWI By DT5666 Period: Jan 1, 1914 to Dec 31, 1918 WWI Feb 28, 1914 The assassination of Francis Ferdinand Jul 28, 1914 Austria declare war on Serbia Aug 1, 1914 Germany declares war on Russia Aug 14, 1914 Britain got involved May 7, 1915 Sinking of Lusitania May 23, 1915 Italy changed sides Dec 23, 1915 Allies started the evacuation from Gallipoli Jan 17, 1916 Consription Introduce in Britian Apr 29, 1916 British surrendor Oct 1, 1918 Armistice Day