Watching the short "Camp Confidential: America's Secret Nazis" compiled from interviews with German speaking Jewish servicemen who worked at the camp outside Washington, DC.
At first, they were charged with interrogating Nazi prisoners about the V-2 program and helped target V-2 sites. Then, they were babysitters for Werhner von Braun and other rocket scientists.
I think about one of their interviews when I hear "both siders" differentiate between fascists and people who are just "okay with fascists" because it helps them.
He said von Braun just wanted to develop his rockets; he wasn't pushing the Nazi line. BUT, OTOH, Jews from the concentration camps were working on the V-2 program. He, and his team, knew what was happening and went along with it. They even worked to help the war effort and therefore to spread Nazi influence.