Rocket technology was stollen by Soviets from Hitler's Germany after conquiring East Germany. same is the case of Atom Bomb and Albert Einstein.
Hitler's Germany was the mother of all inventions and 90% of them are lost like the ones for Flying Socers(UFO?).
Not a commie brain. Infact if you implement Communism/socialism and the brains will be equal.Literally the brain of loading unloading labour and scientist will work alike.