it will not much left over of France and it's culture, if the Nazi win WW2
young Yves Montand had a good career in Vichy france, so he will have similar career in post war France, but not a political one!
People like Jean-Paul Sartre, Jacques Prévert or Picasso would life in danger, to be hunted down and Kill by SS or French counterpart organization.
Apropos SS, Heinrich Himmler wandet transform east France into a autonomic SS State of Burgund
And install a counter pope in Avignon (some insane Idea of Himmler to destroy Roman Catholicism in Europe)
it's certain that the autonomic SS State of Burgund, would be "Germanized".
Means the French are forced to speak German and life the Nazi version of German Culture.
if this happen also to rest of france, i don't know
Some source tell that Hitler wanted that all europeans speak Germans, others tell that only the Nazi occupied area had to be "Germanized"
here we come again to Yves Montand, will he try to sing in German or will left France over Algiers ?