The Nazis were not known to be gracious to the defeated.
Look at how they treated the Dutch under Nazi occupation.
I mention the Dutch because they were said to be "Aryan".
Not "Untermenschen" like the Czechs etc, let alone Jews.
The Gestapo’s Arrest List for the Nazi Invasion of Britain
https://www.youtube.com/watch?v=ezyCTCtuZ4Q