Episode 2: The Battle for Moscow from "The Unknown War" documentary, presented by Burt Lancaster. (shortened version)

Other episodes: 2 of them are censored by Youtube for God knows why Imo this is the best docuseries about the role of Russia in WW2

Fun fact: the Soviet version of this documentary series was dubbed and narrated by famous Soviet actor Vasily Lanovoy. The two, Lancaster and Lanovoy had comparable careers in their respective countries.