WWI By kwheeler17 Jun 28, 1914 Franz Ferdiand was assianated Jul 28, 1914 Austria-Hungary declares war on Serbia. Aug 1, 1914 Germany declares war on Russia. Aug 3, 1914 Germany declares war on France Aug 4, 1914 The United Kingdom declares war on Germany, after Germany invades Belgium. Aug 6, 1914 - Austria-Hungary declares war on Russia and Serbia declares war on Germany. Aug 19, 1914 U.S. President Woodrow Wilson announces the U.S. will remain neutral. Oct 19, 1914 Battle of Ypres begins Dec 24, 1914 The unofficial Christmas truce is declared. Apr 22, 1915 The Battle of Gallipoli begins. May 7, 1915 The British ocean liner RMS Lusitania is sunk by German U-boat, U-20 Feb 21, 1916 The Battle of Verdun begins. Mar 31, 1916 The Battle of Jutland, the major naval battle of the war, begins. Apr 6, 1917 The United States declares war on Germany. Jul 31, 1917 The Battle of Passchendaele (also known as the Third Battle of Ypres) begins. Jan 8, 1918 U.S. President Woodrow Wilson issues his Fourteen Points to peace. Mar 3, 1918 Russia signs the Treaty of Brest Litovsk, which is a peace treaty between Russia and the Central Powers. Mar 21, 1918 Germany launches the Spring Offensive Nov 9, 1918 German Kaiser Wilhelm II abdicates and flees Germany. Jun 28, 1919 The Treaty of Versailles officially ends WWI.