Episode in a 26-part documentary series that presents a detailed survey of World War II. Episode 5 "Barbarossa June-December 1941": Germany, which now controls all of Europe, including the Balkans, turns against the Soviet Union. In the first stages Germany wins destructive victories and its tanks rush forward quickly. But the supreme German command delays, fatefully, and the advance is stopped a number of kilometers from Moscow when the mud comes and later the terrible cold. Includes archival films and testimonies. Narration by the British actor Laurence Olivier.