War world I By edwin54321 Period: Jan 1, 1914 to Dec 1, 1918 War World I Jun 28, 1914 Assassination of Francis Ferdinand Assassination of Francis Ferdinand Jul 28, 1914 Austria declared war on Serbia. Aug 1, 1914 Germany declared war on Russia Aug 1, 1914 Britian and allied countries such as Australia Decleared war May 23, 1915 Italy changed sides and declared war on Germany and Austria Dec 23, 1915 The allies atarted the evacuation from Gallipoli. Jan 27, 1916 Constriction introduced in Britain. Apr 29, 1916 British forces surrender to the Turkish forces at Kut in Mesopotamia. Jul 1, 1916 Start of the battle of Somme. Apr 6, 1917 USA declared war on Germany. Nov 6, 1917 British launched a major unsuccessful. Dec 5, 1917 Armistice between Germany and Russia signed. Mar 21, 1918 Germany broke through Somme Jul 15, 1918 Second battle of Marne Nov 11, 1918 Germany signed armistic with allies officially ending the war.