By September 1939, the war had been raging for years—Japanese aggression in China, Italian aggression in Ethiopia, Nazi aggression in Spain, and Hitler's annexation of Austria and Czechoslovakia. Each time, the Soviet Union aided the victim of aggression, while the West repeatedly succumbed to Nazi aggression.
             

June 22, 1941. At 4 a.m., Germany, without declaring war, unleashed the might of the most advanced military machine ever created on the Soviet Union. Documentary footage captures the first hours of the invasion: the Russian army puts up unprecedentedly daring resistance, the Nazi vultures are destroyed in the air, and Great Britain, only yesterday an adversary, becomes an ally.