World War 1 By capricorn1228 Jun 28, 1914 Assassination of Archduke Franz Ferdinand of Austria Jul 28, 1914 Emperor Franz Joseph of Austria-Hungary declares war on Serbia and Russia. Aug 1, 1914 Official outbreak of World War I. Germany declares war on Russia. Aug 17, 1914 Russia invades East Prussia. Mar 11, 1915 Britain announces a blockade of all German ports. May 23, 1915 Italy declares war on Austria-Hungary. May 23, 1915 Italy entered the war on the side of the Allies Jan 1, 1916 Winston Churchill Winston Churchill served in Belgium as lieutenant colonel of the Royal Scots Fusiliers. (early 1916) Apr 6, 1917 USA declares war on Germany Dec 1, 1917 Treaty of Brest-Litovsk Nov 11, 1918 Armistice signed At 11 am, in the French town of Redonthes, the Armistice was signed bringing the war to an end.
