World War 1 By shaun123456 Jun 28, 1914 Assassination of Archduke Ferdinand Archduke Ferdinand Aug 1, 1914 Russia vs. Germany Russia and Germany Aug 4, 1914 Great Britain vs. Germany [Great Britain](https://www.historylearningsite.co.uk/world-war-one/causes-of-world-war-one/the-british-declaration-of-war/ Aug 26, 1914 Battle of Tannenberg [Russian and Germany](https://www.britannica.com/event/Battle-of-Tannenberg-World-War-I-1914 Sep 6, 1914 First Battle of Marne French,British vs. Germany Apr 22, 1915 Chemical Weapons Germans May 23, 1915 Italy vs. Austria-Hungary [Italy](https://www.history.com/this-day-in-history/italy-declares-war-on-austria-hungary Feb 21, 1916 Battle Of Verdun French vs. Germany May 31, 1916 Battle Of Jutland Germany vs. British Jul 1, 1916 Battle Of The Somme British vs. France Sep 15, 1916 First Tanks British Nov 11, 1918 Armistice Day Veterans Day Jan 28, 1919 Treaty Of Versailles Peace Treaty
