German documentary claims Nazis were developing a 'flying saucer' to deliver bomb and had already started tests on Russian POWs
http://www.dailymail.co.uk/news/article-3180795/Did-Hitler-atomic-weapon-German-documentary-claims-Nazis-developing-flying-saucer-deliver-bomb-started-tests-Russian-POWs.html
Dr. Mengele was trying to breed "little people" to pilot the crafts so they would be less affected by the g-forces,etc.