During the German occupation of Luxembourg in World War II, several Luxembourgers acted in collaboration with Nazi Germany, as also occurred in other countries occupied by the Third Reich. Their number, however, was limited. This included one former minister, the 1925-1926 prime minister Pierre Prüm, who was sentenced in 1946 to four years' imprisonment. At least one mayor was also deposed for political activities by grand-ducal decree on 4 April 1945.