exodus

What empires do you know of that, like the Eastern Roman Empire, withdrew from their former core territory and reestablished themselves in a new area? Some examples: The Umayyad Caliphate fell in the Middle East, but established the Emirate of Cordoba, and later the Caliphate of Cordoba. The...

I want to somehow mirror the story of Exodus but in Nazi Germany, let's say a British spy discovers a concentration camp, reports to the shocked British, and they strike a deal that the Allies will allow an incircled division to retreat and in exchange small British forces will be allowed to...