The Soviet Union's impact on World War II.

The Soviet Air Force dominates the skies.

An attack on Soviet oil fields could have led to a victory, but resistance thwarted Hitler's dream.

Hitler's 1941 invasion of the USSR ran into some its fiercest resistance at the Black Sea ports of Odessa and Sevastopol, where Soviet elite naval infantry brigades fought doggedly to hold back German and Romanian troops. At Sevastopol, a long and bloody siege unfolded, causing the Germans to bring in some of the biggest artillery guns ever used.

Archive film, computer-generated imagery and innovative reconstructions tell the Red Army's story of their bloody defeat to Nazi Germany in Kiev in 1941.