In which capacity did this person, who established the Bogd Khan puppet government, serve in the Russian Civil War?
Roman von Ungern-Sternberg Baron Roman Nicolaus Maximilian von Ungern-Sternberg (Russian: Барон Ро́берт-Ни́колай-Максими́лиан Рома́н Фёдорович фон У́нгерн-Ште́рнберг ) (10 January 1886 NS – 15 September 1921) was an anti-Bolshevik lieutenant general in the Russian Civil War and then an independent warlord whose Asiatic Cavalry Division wrested control of Mongolia from the Republic of China in 1921 after its occupation. He was often referred to as Baron Ungern, or simply Ungern.
Semyon Budyonny Semyon Mikhailovich Budyonny Also "Budennyj", "Budyonnyy", "Budennii", "Budyoni", "Budyenny", or "Budenny"; (April 25 1883-October 26, 1973) was a Russian cavalryman, a military commander during the Russian Civil War and World War II, and a close political ally of Soviet leader Joseph Stalin.