More than 30 million people were killed in the conflict in Eastern Europe during World War II; the battle between Nazism and Stalinism is examined in this four-part series filmed in Germany, Hungary, Poland, Russia, the Ukraine and Belorussia. Leading historians, eyewitness accounts and rare film archives help chronicle the battle for Moscow, from Hitler's early plans to the Red Army's 1942 victory and the final, brutal days of the conflict.