World War I By Kiera_Randall Jun 28, 1914 the assassination of Francis Ferdinand the assassination of Francis Ferdinand Period: Jun 28, 1914 to Nov 11, 1918 World War I Jul 28, 1914 Austria declared war on Serbia Aug 1, 1914 Germany declares war on Russia Aug 4, 1914 Britain and Australia declarers war on Germany two sides formed the allied powers and the central powers. May 23, 1915 Italy changed sides and declared war on Germany and Austria Dec 23, 1915 the allies started the evacuation from Gallipoli Jan 27, 1916 conscription 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 the British launched a major unsuccessful assault on the Western Front Dec 5, 1917 armistice between Germany and Russia signed Mar 21, 1918 Germany broke through Somme Jul 15, 1918 Battle of Marne and Defeated the Germanys Nov 11, 1918 Germany signed armistice and officially ended the war
