The personality of Lieutenant General R. F. von Ungern-Sternberg was brought to the fore in history by the confrontation between “two irreconcilable Russias - red and white”, who met in a mortal battle, from which only one side could emerge victorious...Book A. V. Zhukova talks about the fate of Baron Ungern-Sternberg, one of the leaders of the White movement in Transbaikalia and Mongolia, a staunch monarchist and ideological opponent of the revolution. The author examines the entire complex of religious, political, and national views of Baron Ungern, the “last crusader.”