Old Bolshevik in the context of "Yevgeny Zamyatin"

Kliment Yefremovich Voroshilov (Russian: Климент Ефремович Ворошилов pronounced; Ukrainian: Климент Охрімович Ворошилов, romanized: Klyment Okhrimovych Voroshylov), popularly known as Klim Voroshilov (Russian: Клим Ворошилов; 4 February 1881 – 2 December 1969), was a prominent Soviet military officer and politician during the Stalin era (1924–1953). He was one of the original five Marshals of the Soviet Union, the second highest military rank of the Soviet Union (junior to the Generalissimo of the Soviet Union, which was a post only held by Joseph Stalin), and served as Chairman of the Presidium of the Supreme Soviet, the nominal Soviet head of state, from 1953 to 1960.

Born to a Russian worker's family in Ukraine, Voroshilov took part in the Russian Revolution of 1917 as an early member of the Bolsheviks. He served with distinction at the Battle of Tsaritsyn, during which he became a close friend of Stalin. Voroshilov was elected to the Central Committee of the Communist Party in 1921, and in 1925 Stalin appointed him People's Commissar for Military and Navy Affairs (later People's Commissar for Defence). In 1926, he became a full member of the Politburo. In 1935, Voroshilov was named a Marshal of the Soviet Union.

Sergei Mironovich Kirov (born Kostrikov; 27 March 1886 – 1 December 1934) was a Russian and Soviet politician and Bolshevik revolutionary. Kirov was an early revolutionary in the Russian Empire and a member of the Bolshevik faction of the Russian Social Democratic Labour Party. Kirov became an Old Bolshevik and personal friend to Joseph Stalin, rising through the Communist Party of the Soviet Union ranks to become head of the party in Leningrad and a member of the Politburo.

On 1 December 1934, Kirov was shot and killed by Leonid Nikolaev at his offices in the Smolny Institute. Nikolaev and several alleged accomplices were convicted in a show trial and executed less than 30 days later. Kirov's assassination was used by Stalin as a reason for starting the Moscow trials and the Great Purge.

The Moscow trials were a series of show trials held by the Soviet Union between 1936 and 1938 at the instigation of Joseph Stalin. They were nominally directed against "Trotskyists" and members of the "Right Opposition" of the Communist Party of the Soviet Union.

1. The "Case of the Trotskyite–Zinovievite Terrorist Center" (or Zinoviev–Kamenev Trial, also known as the 'Trial of the Sixteen', August 1936);
2. The "Case of the Anti-Soviet Trotskyist Center" (or Pyatakov–Radek Trial, also known as the 'Trial of the Seventeen', January 1937); and
3. The "Case of the Anti-Soviet 'Bloc of Rightists and Trotskyites'" (or the Bukharin–Rykov Trial, also known as the 'Trial of the Twenty-One', March 1938).

The defendants were Old Bolshevik Party leaders and top officials of the Soviet secret police. Most were charged under Article 58 of the RSFSR Penal Code with conspiring with imperialist powers to assassinate Stalin and other Soviet leaders, dismember the Soviet Union, and restore capitalism. Several prominent figures (such as Andrei Bubnov, Alexander Beloborodov, Nikolai Yezhov) were sentenced to death during the Stalin era outside these trials.

Mikhail Ivanovich Kalinin (Russian: Михаил Иванович Калинин, IPA: [kɐˈlʲinʲɪn] ; 19 November [O.S. 7 November] 1875 – 3 June 1946) was a Soviet politician and Russian Old Bolshevik revolutionary who served as the nominal head of state of the Soviet Union from 1919 until his resignation in 1946. From 1926 until his death, he was a member of the Politburo of the All-Union Communist Party (Bolsheviks).

Born to a peasant family, Kalinin worked as a metal worker in Saint Petersburg and took part in the 1905 Russian Revolution as an early member of the Bolsheviks. During and after the October Revolution, he served as mayor of Petrograd (St. Petersburg). After the revolution, Kalinin became the head of the new Soviet state, as well as a member of the Central Committee of the Communist Party and the Politburo. He also was the Chairman of the Central Executive Committee in the Russian Federal Republic.

Grigory Ivanovich Petrovsky (Russian: Григо́рий Ива́нович Петро́вский, Ukrainian: Григо́рій Іва́нович Петро́вський, romanized: Hryhorii Ivanovych Petrovskyi; 4 February 1878 – 10 January 1958) was a Ukrainian Soviet politician and Old Bolshevik. He participated in signing the Treaty on the Creation of the Union of Soviet Socialist Republics and the Treaty of Brest-Litovsk. Petrovsky was Communist Party leader in Ukraine until 1938, and one of the officials responsible for implementing Stalin's policy of collectivization.

Sergo Konstantinovich Ordzhonikidze (born Grigol Konstantines dze Orjonikidze; 24 October [O.S. 12 October] 1886 – 18 February 1937) was an Old Bolshevik and a Soviet statesman.

Born and raised in Georgia, in the Russian Empire, Ordzhonikidze joined the Bolsheviks at an early age and quickly rose within the ranks to become an important figure within the group. Arrested and imprisoned several times by the Russian police, he was in Siberian exile when the February Revolution began in 1917. Returning from exile, Ordzhonikidze took part in the October Revolution that brought the Bolsheviks to power. During the subsequent Civil War he played an active role as the leading Bolshevik in the Caucasus, overseeing the invasions of Azerbaijan, Armenia, and Georgia. He backed their union into the Transcaucasian Socialist Federative Soviet Republic (TSFSR), which helped form the Soviet Union in 1922 and served as the First Secretary of the TSFSR until 1926.