The politicization of the education system essentially replaced academic tradition and excellence with ideological adherence and trappings, such as membership in National Socialist organizations including the "Nationalsozialistische Deutsche Arbeiterpartei" (NSDAP, National Socialist German Workers Party), the "Nationalsozialistischer Deutscher Dozentenbund" (NSDDB, National Socialist German Lecturers League), and the "Nationalsozialistischer Deutscher Studentenbund" (NSDStB, National Socialist German Students' League). The politicization can be illustrated with the conflict which evolved when a replacement for Arnold Sommerfeld was sought in view of his emeritus status. The conflict involved one of the prominent "Uranverein" participants, Werner Heisenberg.