Caucasus Campaign

The Caucasus Campaign comprised armed conflicts between the Ottoman Empire and the Russian Empire, later including Azerbaijan, Armenia, Central Caspian Dictatorship and the UK as part of the Middle Eastern theatre or alternatively named as part of the Caucasus Campaign during World War I. The Caucasus Campaign extended from the Caucasus to the Eastern Asia Minor region, reaching as far as Trabzon, Bitlis, Muş and Van. The land warfare was accompanied by the Russian navy in the Black Sea Region of the Ottoman Empire.

On February 23, 1917, the Russian advance was halted following the Russian Revolution, and later the disintegrated Russian Caucasus Army was replaced by the forces of the newly established Armenian state, comprised from the previous Armenian volunteer units and the Armenian irregular units. During 1918 the region also saw the establishment of the Central Caspian Dictatorship, the Republic of Mountainous Armenia and an Allied force named Dunsterforce which was composed of elite troops drawn from the Mesopotamian and Western Fronts. The Ottoman Empire and German Empire had a hot conflict at Batumi with the arrival of German Caucasus Expedition whose prime aim was to secure oil supplies.

On March 3, 1918, the campaign terminated between the Ottoman Empire and Russia with the Treaty of Brest-Litovsk and on June 4, 1918, the Ottoman Empire signed the Treaty of Batum with Armenia. However, the armed conflicts extended as Ottoman Empire continued to engage with Central Caspian Dictatorship, Republic of Mountainous Armenia and Dunsterforce of British Empire until the Armistice of Mudros signed on October 30, 1918.