The greatest fervour of Germanisation was implemented in those regions seized by the German Wehrmacht during World War II. Frequently in his public rallies, Adolf Hitler called for the displacement and liquidation of Poles inhabiting Poland. On November 25, 1939 at the NSDAP Office of Racial Policy, a codification was formed codifying Erhard Wetzel and Günther Hecht's memorandum entitled "The Question of the treatment of the population of the former Polish territories in accordance to racial politics" ("Die Frage der Behandlung der Bevölkerung der ehemaligen polnischen Gebiete nach rassepolitischen Gesichtspunkten"), which openly expressed: