10 events ww1 By 26wheelerl Jul 28, 1814 Austria-Hungary declares war on Serbia, beginning World War I. Jun 28, 1914 the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip on Aug 2, 1914 Germany invades Luxembourg and Belgium Aug 10, 1914 Austria-Hungary invades Russia. Feb 21, 1916 Germany begins the attack on Verdun. Apr 4, 1917 US Enters War, Congress authorizes a declaration of war against Germany Jun 25, 1917 American combat forces arrive in France. Jan 8, 1918 President Woodrow Wilson presents to Congress his outline of Fourteen Points required for peace. Sep 26, 1918 Allied forces begin the attack at Meusse-Argonne, the final offensive of the war. Jun 18, 1919 Peace conference begins at Paris