It took me a moment to figure out what you asking.
Now remember, not all Germans were Nazis -- Germany's greatest general Rommel was never a Nazi - in the end Hitler killed him.
What the Allies did was to grab up every single rocket scientist, the best academics, doctors, mechanical engineers --- "the spoils of war".
The Russians were exceptionally brutal.
They focused on scientists and engineers.
Brutalized every female they could find,
They took care of their business and went home.
The war was over - even the prisoners were released.
You don't kidnap them.
You "INVITE" certain individuals to be your guests, give them a nice home instead of living on the street or getting killed.
It was an offer they couldn't refuse..
All of our "founding's fathers" once were these people, so was Russia.
We had thousands of Germans come to the US ad South America.
Who knows how many the US and military "Personally Invited"
And we well certainly NEVER know anything about Russia.
Yeah, we took in thousands, so did the British -- I am sure Russia also took in thousand.