General Mikhail Tukhachevsky was arrested on May 22, 1937 and charged, along with seven other Red Army commanders, with the creation of a "right-wing- Trotskyist " military conspiracy and espionage for Nazi Germany, based on confessions obtained from other arrested officers.https://en.wikipedia.org/wiki/Case_of_the_Trotskyist_Anti-Soviet_Military_Organization
Mikhail Nikolayevich Tukhachevsky Михаил Николаевич Тухачевский: Nickname(s) Red Napoleon: Born 16 February 1893 Alexandrovskoye, Dorogobuzhsky Uyezd, Smolensk Governorate, Russian Empire: Died: 12 June 1937 (aged 44) Moscow, Russian SFSR, Soviet Union: Buried
Mikhail Tukhachevsky, (born February 16 [February 4, Old Style], 1893, near Slednevo, Russia—died June 11, 1937), Soviet military chief responsible for modernization of the Red Army prior to World War II. Tukhachevsky was born to a noble family and graduated from the Alexandrovskoe Military Academy in 1914.
TUKHACHEVSKY, MIKHAIL NIKOLAYEVICH. (1893 – 1937), prominent Soviet military figure; strategist, commander, weapons procurer. Mikhail Tukhachevsky is one of the most important and controversial figures in the history of the Soviet armed forces.
General Mikhail Tukhachevsky was arrested on May 22, 1937 and charged, along with seven other Red Army commanders, with the creation of a "right-wing- Trotskyist " military conspiracy and espionage for Nazi Germany, based on confessions obtained from other arrested officers.
Primary advocates of the development included Alexander Svechin (1878–1938), Mikhail Frunze (1885–1925), and Mikhail Tukhachevsky (1893–1937). They promoted the development of military scientific societies and identified groups of talented officers.
The Tambov Rebellion of 1920–1922 was one of the largest and best-organized peasant rebellions challenging the Bolshevik government during the Russian Civil War.  The uprising took place in the territories of the modern Tambov Oblast and part of the Voronezh Oblast, less than 500 kilometres (300 mi) southeast of Moscow.
Mikhail Nikolayevich Tukhachevsky , nicknamed the Red Napoleon, was a Soviet general who was prominent between 1918 and 1937 as a military officer and theoretician. He was later executed during the show trials of 1936-38.