<br />What if von Braun refused the nazi regime to design rockets? <br /><br />Most obviously -- he would have died in a Stalag. <br />------------<br />Why should that be? If he had not volunteered for rockets and moved his interests consciously to another topic, nothing would had happened to him at all (maybe he would have gotten drafted into the military, if he was not doing anything vital for the industry in Germany) - somebody else would have taken his place in the rocket division of secret military projects. It would be different, if he had refused to work on the V2 any further well in the production phase (1943 or 1944) - but even then nobody would have put him in a prison or KZ (by the way Stalags were just for POWs), unless he would have actively sabotaged the project.