The Central-Caspian Dictatorship asked for British help in order to stop the advancing Ottoman Army of Islam that was marching towards Baku. A small British force under General Lionel Dunsterville was sent to Baku and helped the mainly Dashnak-Armenian forces to defend the capital during the Battle of Baku. However, Baku was taken over on September 15, 1918 by Azerbaijani-Ottoman army which entered the capital subsequently causing British forces to evacuate and much of the Armenian population to flee. After the Ottoman Empire signed the Armistice of Mudros on October 30, 1918, a British occupational force re-entered Baku.