Alexander Sedyakin was executed during a campaign that occurred during what years?
Great Purge The Great Purge or the Great Terror (Russian: Большо́й терро́р ) was a campaign of political repression in the Soviet Union which occurred from 1936 to 1938. It involved a large-scale purge of the Communist Party and government officials, repression of peasants and the Red Army leadership, widespread police surveillance, suspicion of "saboteurs", "counter-revolutionaries", imprisonment, and arbitrary executions. Mobile gas vans were invented to execute people without trial. In Russian historiography, the period of the most intense purge, 1937–1938, is called Yezhovshchina (Russian: Ежовщина ; literally, "Yezhov phenomenon", commonly translated as "times of Yezhov" or "doings of Yezhov"), after Nikolai Yezhov, the head of the Soviet secret police, the NKVD, who was later killed in the purge. It has been estimated that 600,000 people died at the hands of the Soviet government during the Purge.
Battle of Lyubar The Battle of Lyubar or battle of Lubar took place on 14–27 September 1660 near Lyubar, during the Russo-Polish War (1654–1667), between the forces of the Polish-Lithuanian Commonwealth (allied with the Tatars) and Tsardom of Russia (allied with the Cossacks). It was the first battle of the 1660 campaign in the south. It ended with a Polish victory. The Russian army retreated and was subsequently destroyed during the battle of Chudniv.