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That applies to the superb rocket scientists.

Others were hired for their expertise as spies, secret police and worse:

https://www.nytimes.com/2014/10/27/us/in-cold-war-us-spy-age...

"Some spies for the United States had worked at the highest levels for the Nazis.

One SS officer, Otto von Bolschwing, was a mentor and top aide to Adolf Eichmann, architect of the “Final Solution,” and wrote policy papers on how to terrorize Jews."