and communists were killed, imprisoned, or exiled. Nauka, planowanie, wypędzenia : Generalny Plan Wschodni narodowych socjalistów : katalog wystawy Niemieckiej Współnoty Badawczej (PDF) (in Polish). Oppression of churches Main article: Kirchenkampf See also: Religion in Nazi Germany When the Nazis seized power in 1933, roughly 67 percent of the population of Germany was Protestant, 33 percent was Roman Catholic, while Jews made up less than 1 percent. Atlas of Nazi Germany: A Political, Economic, and Social Anatomy of the Third Reich. The German Luftwaffe failed to defeat the RAF in what became known as the Battle of Britain, and by the end of October, Hitler realised that air superiority would not be achieved. These laws became the basis of the Führerprinzip, the concept that Hitler's word overrode all existing laws. At universities, appointments to top posts were the subject of power struggles between the education ministry, the university boards, and the National Socialist German Students' League. Germany and the Second World War, Vol. Other sects of Christianity were also targeted, with Chief of the nsdap Chancellery Martin Bormann publicly proclaiming in 1941, "National Socialism and Christianity are irreconcilable." Shirer writes that opposition to Christianity within nsdap leadership was so pronounced that, "the Nazi regime intended to eventually destroy.