Witness to numerous battles throughout history, the Caucasus endured another harsh war between November 1914 and December 1917. This work, about "a quasi - ignored front, makes known to the public, to a greater extent, a particularly important segment of the history of the First World War in the eastern parts of Europe, at the confluence with Asia, a front that had a considerable role in the equation of the deployment of forces between Turkey and Russia" ( prof. univ. dr. Ioan Bolovan). At the same time, the book also deals with other related topics: the military operations in Persia (1915 - 1917), the connection of the Russian front in the Caucasus with the British one in Mesopotamia (Iraq) and, last but not least, the deportation and massacre of Armenians in Eastern Anatolia.