WW1 By David789 Jun 28, 1914 Archduke assassinated Archduke Franz Ferdinand is assassinated in Sarajevo Period: Jul 28, 1914 to Nov 11, 1918 World War 1 Aug 4, 1914 German troops enter Belgium Aug 12, 1914 Big Bertha used Oct 29, 1914 Turkey joins Central Powers Dec 25, 1914 Christmas Truce Many soldiers decided to not fight war on the day of Christmas and there was a lot of repercussion for this. Apr 22, 1915 Germans Introduce Gas Warfare Jan 19, 1917 U.S. Declares war on Germany Jun 29, 1917 Greece declares war on central powers Nov 11, 1918 Armistice Jun 28, 1919 Treaty of Versailles signed
