Some wit thought the movie should perhaps have been called "I Aim at the Stars (But Sometimes I Hit London)".
Reminds me of Gerald Bull.
https://en.wikipedia.org/wiki/Gerald_Bull
He just wanted to build his space gun. He had no qualms about building artillery for Saddam Hussein if it meant his efforts would get funded.
He was the right man at the right place at the right time in the wrong political environment. He used the Nazi politics for his own means and as soon as it was obvious he dumped them for the Americans.
I don't know if has been translated but there is a great documentary from German television called "Der Raketenmann" (the rocket man) which depicts von Braun's life more critically than "I Aim at the Stars".