The Great War By Samuele4592467591 Jun 28, 1914 Francis Ferdinand is assassinated. Jul 28, 1914 Austria-Hungary declares war on Serbia, beginning World War I. Period: Aug 2, 1914 to Aug 7, 1914 Germany invades Luxembourg and Belgium. France invades Alsace. British forces arrive in France. Aug 10, 1914 Austria-Hungary invades Russia. Feb 8, 1915 Germany begins naval blockade of Great Britain. May 23, 1915 Italy declares war on Austria-Hungary. Feb 3, 1917 United States severs diplomatic relations with Germany. Apr 6, 1917 The United States declares war on Germany. Jun 24, 1917 American combat forces arrive in France. Dec 15, 1917 Russia signs armistice with Germany. Mar 21, 1918 Germany begins its final offensive of the war. Nov 11, 1918 Germany signs the Armistice at Compiègne, ending the Great War. Jan 18, 1919 Peace conference begins in Paris.