William Allen, a British scientist, politician, diplomat and traveler— in collaboration with the Russian military historian P. Muratov, created an impressive overview of the largest military conflicts of the XIX—XX centuries in the Caucasus, which has always been of great strategic importance, being the natural border between Asia and Europe. The book describes in detail the battles and battles, the problems of supplying troops in hard-to-reach areas, as well as the alignment of the political interests of the warring parties. This work contains a wealth of information and can serve as an extremely authoritative source for both military historians and fans of national and world history.