World War 1 By Abbey12 Jun 28, 1914 Archduke Franz Ferdinand is assassinated. Aug 1, 1914 Germany declares was on Russia. Aug 3, 1914 Germany declares war on Russia. Aug 4, 1914 Germany invades Belgium. Britain declares war on Germany. Oct 19, 1914 the Allies defeat the Germans at the first battle of Ypres. Dec 24, 1914 An unofficial truce is declared between the two sides at Christmas. Oct 14, 1915 Bulgaria enters the war by declarig war on Serbia. Apr 6, 1917 The United states enters the war, declaring war on Germany Dec 17, 1917 The Russians agree to peace with the central powersand leave the war. Nov 11, 1918 Germany agrees to an armistice and the fighting comes to an end at 11am on the 11th day on the 11th month. Jun 28, 1919 The Treaty of Versailles is sighned by Germany and World War one comes to an end.