The Caucasus Campaign comprised armed conflicts between the Ottoman Empire and the Russian Empire, later including Azerbaijan, Armenia, Central Caspian Dictatorship and the British Empire 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.