"The Battle of Russia," Chapter V of Frank Capra's "Why We Fight" series, follows the beginning of the end for Adolph Hitler. In Part Two, the German army falls victim to the Soviet scorched-earth strategy. The Russian forces flee from the start, retreating deep into their homeland, drawing the Nazis farther and farther away from the German border. As the Red Army falls back, it destroys infrastructure and natural resources, making it difficult for the Nazi army to live off the land. Once the famed Russian winter sets in, Germany is doomed. The film focuses on the stalwart defense of Leningrad. After the Nazis surround the Soviet metropolis in an attempt to starve out its residents, the Russians outsmart them by constructing a fully operational railroad across a frozen lake to get supplies to the beleaguered citizens. The Battle of Russia ends up as a disaster for the