When did the campaign of political  repression that Mikhail Demichev was arrested during occur?
Mikhail Demichev Mikhail Demichev (1885 – November 19, 1937) was a Soviet Komdiv (division commander). He fought in the Imperial Russian Army in World War I before going over to the Bolsheviks in the subsequent civil war. He was a recipient of the Order of the Red Banner. During the Great Purge, he was arrested on August 9, 1937 and later executed. After the death of Joseph Stalin, he was rehabilitated in 1956.
Lishenets A lishenets (Russian: лишенец ; ] ), лишение "deprivation" + -ец "-ee"; "disenfranchised"; plural lishentsy, Russian: лишенцы ) was a person stripped of the right of voting in the Soviet Union of 1918–1936. Disfranchisement was a means of repression of the categories of population that were classified as "enemies of the working people".