russians fought a very hard and it devasted their country and they had absurd losses. they got their entire culture wiped out. jewish "intelligence" officers later advised jewish secret police in poland not to slaughter the whole class of intelligentsia, as it would be problematic to rebuild the country later, this is in official documents, but the jews in poland did not listen and slaughtered the polish upper class (professors, priests, military officers etc) in katyn.
Norway