Passage: Chernenko joined the Komsomol (Communist Youth League) in 1929, and became a full member of the Communist Party in 1931. From 1930 to 1933, he served in the Soviet frontier guards on the Soviet–Chinese border. After completing his military service, he returned to Krasnoyarsk as a propagandist. In 1933 he worked in the Propaganda Department of the Novosyolovsky District Party Committee. A few years later he was promoted to head of the same department in Uyarsk Raykom. Chernenko then steadily rose through the Party ranks, becoming the Director of the Krasnoyarsk House of Party Enlightenment, then in 1939 the Deputy Head of the Agitprop Department of Krasnoyarsk Territorial Committee, and finally in 1941 Secretary of the Territorial Party Committee for Propaganda. In the 1940s he established a close relationship with Fyodor Kulakov. In 1945, he acquired a diploma from a party training school in Moscow, and in 1953 he finished a correspondence course for schoolteachers.

Question: In what year did Chernenko acquire a diploma?
1945