1941 was a disaster for Nazi Germany. After invading the Soviet Union in June, they had expected to defeat the Red Army in 6 weeks. But by December, German forces had been thrown back by the Soviet winter counter-offensive. And there were even bigger problems. Germany had previously relied on the Soviets themselves for supplies of raw materials. But now, at war with their former ally, those supplies were running short.
Explore these stories with a visit to an IWM site: https://www.iwm.org.uk
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