Well, I think what Panzer says is indeed scary.
I know that when the germans conquered land in Russia, some SS squadrons followed to "clean" the area, killing whole villages, transporting people to KZs and other cruel things. I once read a biography of a german soldier whose unit gathered the people of a village in a church and then began to slaughter them. They threw little children against the walls and what not, killed everybody and I don´t even remember why they did it. Well, this soldier was now supposed to fire at the people but instead he turned his rifle towards his captain. In the end, he didn´t fire and gave up, but he got put into a minesweeper company and was more or less supposed to die on a minefield, which may also explain why so many people cooperate with such an evil regime, though I still can´t really understand it.
I never exactly heard of it, but I could think of Russians treating Nazi sympathizers very badly, because we all know of the huge hatred the Russians had because of all those Nazi crimes and cruelty in Russia.