World War 1 By anMathews Jun 28, 1914 Francis Ferdinand assassinated at Sarajevo Period: Jun 28, 1914 to Jun 28, 1919 World War 1 Jul 28, 1914 Austria declared war on Serbia Aug 1, 1914 Germany declared war on Russia Aug 3, 1914 Germany declared war on France and invaded Belgium. Germany had to implement the Schlieffen Plan. Aug 4, 1914 Britain declared war on Germany Oct 29, 1914 Turkey entered the war on Germany’s side. May 23, 1915 Italy declared war on Germany and Austria Apr 29, 1916 British forces surrendered to Turkish forces at Kut in Mesopotamia Apr 6, 1917 USA declared war on Germany Dec 5, 1917 Armistice between Germany and Russia signed Oct 30, 1918 Turkey made peace Nov 3, 1918 Austria made peace Nov 11, 1918 Germany signed an armistice with the Allies Jun 28, 1919 The Treaty of Versailles was signed by the Germans