In the history of the modern world, there have been few characters more sadistic, sinister, and deeply demented as Baron Ungern-Sternberg. An anti-Semitic fanatic with a penchant for Eastern mysticism and a hatred of communists, Baron Ungern-Sternberg took over Mongolia in 1920 with a ragtag force of White Russians, Siberians, Japanese, and native Mongolians. While tormenting friend and foe alike, he dreamed of assembling a horse-borne army with which he would retake communist controlled Moscow. In this epic saga, which ranges from Austria to the Mongolian Steppe, historian and travel writer James Palmer has brought to light the gripping life story of a madman whose actions foreshadowed the most grotesque excesses of the 20th century.