Grigory Mikhaylovich Semyonov

Григорий Михайлович Семёнов
Russian Empire Russia 1890–1946 ✕ Hanged

The White ataman who ruled Transbaikal under Japanese protection and defied Kolchak

«…in the conditions of the nascent civil war, all softness and humanity must be cast aside»: justifying his White Terror policy in his memoirs About Myself.

Born a Transbaikal Cossack, he was a capable cavalry officer decorated with the Order of St. George in the First World War. In late 1917 he formed the Special Manchurian Detachment (OMO), opening one of the first fronts of the Siberian civil war; with Japanese military and financial backing he seized the Transbaikal region and established the 'Eastern Outskirts' government. He defied Kolchak's authority and built an independent power base, while the mass White Terror carried out under his rule was so brutal that US Army intelligence investigated it as a war crime. After his defeat in 1920 he continued anti-Soviet activities in Manchuria under Japanese patronage until Soviet forces captured him in 1945 and he was hanged.

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