Sergei Yaroslavsky (c.1910 - 1940) was a pilot with the Soviet Red Air Force. He served during the Second World War. Yaroslavsky had flown as a 'volunteer' aboard an SB-2 aiding the Republican forces in the Spanish Civil War. When the wider European war erupted, Yaroslavsky and his crewmates - Armenian co-pilot Anastas Mouradian and foul-mouthed bombardier Ivan Kuchkov - initially served in the same capacity against German forces invading Czechoslovakia in 1938. After Czechoslovakia fell, Yaroslavsky and his squadron had a brief respite from the war, as they had no way of attacking Germany directly.