Secretariat of the Communist Party of the Soviet Union the CPSU, who was also a Politburo member, was the leader of the Secretariat and of the Party. Dual membership in the Secretariat and the Politburo was in practice reserved for two or three very senior members of the Soviet leadership, and in the post-Stalin era (after March 1953) was a stepping-stone to ultimate power. The last five Soviet leaders (Nikita Khrushchev, Leonid Brezhnev, Yuri Andropov, Konstantin Chernenko and Mikhail Gorbachev) were all senior Secretaries before becoming First or General Secretaries. Additionally, Georgy Malenkov was briefly reckoned as the leader of the Party for a week after Stalin's death by
Hero of the Soviet Union bronze bust of his or her likeness with a commemorative inscription erected in his or her hometown. Two famous Soviet fighter pilots, Aleksandr Pokryshkin and Ivan Kozhedub were three times Heroes of the Soviet Union. A third award entitled the recipient to have his/her bronze bust erected on a columnar pedestal in Moscow, near the Palace of the Soviets, but the Palace was never built. After his release from serving a 20-year sentence in a Mexican prison for the assassination of Leon Trotsky, Ramon Mercader moved to the Soviet Union in 1961 and was awarded the Hero of the Soviet