On 7 March 1936, in violation of the Treaty of Versailles and the Locarno Treaties, German troops reoccupied the Rhineland, Germany's western border region which was designated as a demilitarised buffer zone. Hitler called a plebiscite for 29 March to retrospectively approve the reoccupation, and adopt a list of exclusively Nazi candidates to sit in the new Reichstag. Goebbels commandeered "Graf Zeppelin" and the newly launched "Hindenburg" for the Reich Ministry of Public Enlightenment and Propaganda. The airships flew in tandem around Germany before the vote, with a joint departure from Löwenthal on the morning of 26 March. Millions of Germans watched from below as they toured the country for four days and three nights, dropping propaganda leaflets, playing martial music and slogans from large loudspeakers, and broadcasting political speeches from a makeshift radio studio on "Hindenburg". The vote, held under the new Nuremberg Laws which disenfranchised the Jews, resulted in overwhelming support for the Nazis. After Eckener complained publicly about the propaganda flights, Goebbels made him an "unperson"; his name was not to be mentioned nor his photograph published.