Kliment Yefremovich Voroshilov, popularly known as Klim Voroshilov, was a prominent Soviet military officer and politician during the Stalin era. He was one of the original five Marshals of the Soviet Union, the highest military rank of the Soviet Union, 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 modern 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. In 1926, he became a full member of the Politburo. In 1935, Voroshilov was named a Marshal of the Soviet Union. He played a central role during the Great Purge, denounced many of his own colleagues and subordinates, and personally signed over a hundred execution lists.