plebiscite regarding Austrian independence for 13 March, but Hitler sent an ultimatum to Schuschnigg on 11 March demanding that he hand over all power to the Austrian nsdap or face an invasion. The Law for the Restoration of the Professional Civil Service passed on 7 April forced all non-Aryan civil servants to retire from the legal profession and civil service. Initially a small bodyguard unit under the auspices of the SA, the Schutzstaffel (SS; Protection Squadron) grew to become one of the largest and most powerful groups in Nazi Germany. Bulgaria signed the pact on 17 November. Heinemann, Isabel; Oberkrome, Willi; Schleiermacher, Sabine; Wagner, Patrick (2006). Promiscuity increased as the war progressed, with unmarried soldiers often intimately involved with several women simultaneously. The trial of Adolf Eichmann in 1961 and the broadcast of the television miniseries Holocaust in 1979 brought the process of Vergangenheitsbewältigung (coping with the past) to the forefront for many Germans. The German Red Cross still maintains that the death toll from the expulsions.2 million. Some 26,000 railroad cars of art treasures, furniture, and other looted items were sent to Germany from France. After the war started, slave labourers were extensively used. The nsdap anthem " Horst-Wessel-Lied " Horst Wessel Song became a second national anthem. Party rank was not determined by elections, and positions were filled through appointment by those of higher rank. The Wages of Destruction: The Making and Breaking of the Nazi Economy. In 1936, a Confessing Church envoy protested to Hitler against the religious persecutions and human rights abuses. "Statistisches Jahrbuch für die Bundesrepublik Deutschland" (PDF) (in German). By the end of the war, occupation costs were calculated by the Nazis at 60 billion Reichsmarks, with France alone paying.5 billion.