Memory is sketchy, but von Braun complained quite a bit that American engineers were lazy and insufficiently motivated. Of course von Braun was a breed all his own. Nobody could match the smarts and discipline he had at that time. The U.S. was extremely lucky to get him on our side.
As far as I know the only German scientists were in Germany that he worked with up until the end of WWII. I could be wrong on that.
If not for him, we probably would not have had a space program, or at least it would have taken us much longer to do what we did (Mercury-Gemini-Apollo missions).
yup, that’s who i was implying. von Braun.