Episode 12: Barbarossa - General Winter’s greatest victory or German mistake?

In this episode we take a closer look at Operation Barbarossa, the German invasion of the Soviet Union in 1941. It was the largest campaign in the history of warfare, and the one that, arguably, turned the tide and decided the outcome of the Second World War.Why did the Germans decide to invade, what were the Soviets plans, and how did this campaign develop?