Well, let’s face it. The Krauts pretty much pioneered rocket science in the ‘30s/’40s.
Wernher von Braun was extremely important to the US Space Program as well.
They copied Goddard. It started right here in the USA.
For all of the hype about the V2, That program wasn’t so good when looked out objectively. In the first place it killed more people making it than it did in use. And they spent the amount of money equivalent to the Manhattan project on it and only delivered explosives on target equivalent to two 8th Air Force thousand plane raids.
And by 1945/1945, we could do those a couple of times a week.
Peenemunde has be closed for some time. Then there’s the little matter of launching a large ballistic rocket from within German borders. That might make the neighbors a bit nervous. I guess they could ask the French for their launch facilities in Guyana?