Worl War 1 By dj5922@sof.philasd.org Jun 28, 1914 world war 1 World war 1 started june 28th the assassination of Francis Ferdinand Jun 28, 1914 • July 28th Austria declared war on Serbia Jun 28, 1914 The assination of Francis Ferdinad Aug 4, 1914 • August 4th Britain and allied countries such as Australia declares war Germany two sides formed the allied powers and the central powers . May 23, 1915 • May 23rd Italy changed sides and declared war on Germany and Austria. Apr 6, 1916 • April 6th USA declared war on Germany this gave the edge the allies needed. Apr 29, 1916 • April 29th British forces surrender to the Turkish forces at kut in Mesopotamia. Jul 1, 1916 • July 1st start of the battle of Somme. Dec 5, 1916 • December 5th Armistice between Germany and Russia signed. Nov 11, 1918 • November 11th Germany signed armistice with allies offically ending the war.