WWI By WhatUsername Jun 28, 1914 Archduke Ferdinand assasinated Period: Jun 28, 1914 to Apr 4, 1919 WWI events Robert Rella Jul 28, 1914 Austria Hungary declared war on Serbia Jul 29, 1914 WWI Began Aug 1, 1914 Machine guns came into warfare May 7, 1915 The Lusitania sinks Jan 16, 1917 Zimmerman note Mar 21, 1918 Germany launches offensives into belgium Jun 28, 1918 Treaty of Versailles signed Sep 26, 1918 Allied forces launch final offensive into Western Front Nov 11, 1918 Armistice
