That would be the Channel Isles - they invented a fictitious one for the series, but the reality was Jersey, Guernsey, and Sark which were and arethe last part of the Duchy of Normandy under British jurisdiction.
Agree about films, they have become modern popular history with all their faults and characterisations. We can only hope that somwhere there isn't anyone who actually believes Churchillwas a US Marine looking rather like Slater
The Auschwitz anniversary should give us all pause for thought as to how ordinary people get involved in genocide. Blair rightly observed Auschwitz started with a brick through the window of a Jewish business.
You should get hold of a film called "It Happened Here". It's a film student production, but very well made. It'sthe story of what happens to an ordinary British nurse after the German invasion suceeds. She joins the blackshirts, because you don't get a work permit otherwise. She ends up in a euthanaesia clinic in a nice English Surrey village where exhausted slave workers are taken to be killed off.
Pause for thought indeed.