Operation Paperclip - After NAZI war ended, USA grabbed all the NAZI scientists for their own projects.

https://en.wikipedia.org/wiki/Operation_Paperclip#:~:text=Operation%20Paperclip%20was%20a%20secret,Europe%2C%20between%201945%20and%201959.

Operation Paperclip was a secret United States intelligence program in which more than 1,600 German scientists, engineers, and technicians were taken from former Nazi Germany to the U.S. for government employment after the end of World War II in Europe, between 1945 and 1959. Conducted by the Joint Intelligence Objectives Agency (JIOA), it was largely carried out by special agents of the U.S. Army's Counterintelligence Corps (CIC). Many of these personnel were former members, and some were former leaders, of the Nazi Party.