Baron Nikolai Robert Maximilian Freiherr von Ungern-Sternberg, often referred to as Roman von Ungern-Sternberg or Baron Ungern, was a Russian military leader in the Russian Civil War and then an independent warlord who intervened in Mongolia against China.
- Occupation
- military officer, politician, anti-communist, warlord
- Citizenship
- Russian Empire
- Born
- December 29, 1885
- Died
- September 15, 1921
