Political map of Russia & the former Soviet Union 1 November 1918 (End of the Great War): While the Allies were intervening in Russia (Allied intervention in the Russian Civil War), they were also mounting offensives in the west against the weakening Central Powers (Central Powers). By the end of October, Bulgaria and the Ottoman Empire had come to terms, while the Austro-Hungarian Empire was rapidly disintegrating. On November 11, Germany signed an armistice with the Alllies (Armistice with Germany), bringing an end to the First World War.