Infantry Regiment 13th Caucasian Infantry Regiment 56th Infantry Regiment 15th Infantry Division (commanded by Kaymakam Süleyman Izzet Bey) 38th Infantry Regiment 106th Caucasian Infantry Regiment Operations Azerbaijan With the march of an Ottoman supported army to Baku, the Bolshevik soviet fled to Astrakhan which left Baku to be defended by SRs, Armenians, and, later, the British General Dunsterville's force of 1,000. Chief of the British Military Mission to the Caucasus Major General Lionel Charles Dunsterville reached Bandar-e Anzali in mid-February and organized a small military force called "Dunsterforce" of Cossacks, Russians and Azeris. The British authority were concerned about an advance of either the Germans or the Ottoman forces to the Baku oil fields and began to send reinforcements to the "Dunsterforce" in June 1918. Although most of the oil fields were owned by Azerbaijanis and less than 5 per cent by Armenians, most of the production/distribution rights in Baku were owned by foreign investors, primarily the British. The Islamic Army of the Caucasus began to attack Hill 905 on July 31 to the northwest of Baku, but failed to get the hill and halted their attack on August 2. Major General L.C. Dunsterville coordinated future combined operations with the Cossack forces commended by Colonel Lazar Bicherakhov, and sent about 300 British soldiers to Baku and they arrived there on August 5. The Islamic Army of the Caucasus launched second attack to Hill 905 on August 5. This attack failed again and they lost 547 officers and soldiers. The last attack of the Islamic Army of the Caucasus on Baku began at 1:00 A.M. on September 14. The Ottoman 15th Division attacked from the north and the 5th Caucasian Division attacked from the west. British Major General Dunsterville decided to withdraw about 11:00 A.M. because of the failure of the defense. "Dunsterforce" loaded its personnel and equipment and set sail for Bandar-e Anzali by 10:00 P.M. on September 14. The Army of Islam took Baku on September 15 and sent a telegraph announcing the capture of Baku to Enver Pasha on September 16. North Caucasus The Islamic Army of the Caucasus sent the 15th Division to North Caucasus after its reorganization. The 15th Division advanced northwards along the Caspian coast, encountered the local resistance in front of Derbent and spotted advance on October 7. The division restarted attack on Derbent on October 20 and occupied the city on October 26.