world war 1 By ghost010497 Jun 28, 1914 war started Jun 28, 1914 Francis Ferdinand killed Period: Jun 28, 1914 to Nov 11, 1918 world war 1 Jul 28, 1914 Austria declared war on Serbia Aug 14, 1914 Britain and Australia declare war on Germany May 23, 1915 Italy switch sides and declared war against Germany Dec 23, 1915 allies started to evacuate Gallipoli Jan 27, 1916 conscription introduced Apr 29, 1916 British forces surrender to Turkish forces Jul 1, 1916 start of battle of Somme Apr 6, 1917 us declared war Nov 6, 1917 British launched major assault on western front Dec 5, 1917 armistice between Germany and Russia signed Mar 21, 1918 Germany broke through the line Jul 15, 1918 battle of Marne started resulted In the downfall of Germany Nov 11, 1918 war end