Are you claiming Adolph Hitler was an expert at rocket science? ... I seriously doubt that, but Hitler certainly fully funded the Nazi rocket program
Are you aware of why?
Under the Versailles Treaty, Germany was forbidden most aircraft. They did some research and development into medium aircraft, in the guise of cargo and passenger aircraft. One of the reasons why they never built heavy bombers dates back to that treaty.
However, the Versailles Treaty was completely silent on rockets. Therefore they could throw all the money into it they wanted, and had absolutely no worry that they would be stopped. The funding of that program was entirely because they could, rockets was such a new field that there were no restrictions on Germany doing research in that area.