Hitler was discharged from the army on 31 March 1920 and began working full-time for the party. Displaying his talent for oratory and propaganda skills, with the support of Drexler, Hitler became chief of propaganda for the party in early 1920. When early party members promulgated their 25-point manifesto on 24 February 1920 (co-authored by Hitler, Anton Drexler, Gottfried Feder and Dietrich Eckart), it was Hitler who penned the first point, revealing his intention to unify German-speaking peoples, claiming that the party demanded "all Germans be gathered together in a Greater Germany on the basis of the right of all peoples to self-determination". By the spring of 1920, he engineered the change of name to the National Socialist German Workers' Party ("Nationalsozialistische Deutsche Arbeiterpartei" – NSDAP), commonly known as the Nazi Party. Under his influence, the party adopted a modified swastika, a well-known good luck charm that had previously been used in Germany as a mark of "volkishness" and "Aryanism", along with the Roman salute used by Italian fascists. At this time, the Nazi Party was one of many small extremist groups in Munich, but Hitler's vitriolic beer hall speeches began attracting regular audiences. He became adept at using populist themes, including the use of scapegoats, who were blamed for his listeners' economic hardships. He gained notoriety for his rowdy polemic speeches against the Treaty of Versailles, rival politicians and especially against Marxists and Jews. Hitler used personal magnetism and an understanding of crowd psychology to advantage while engaged in public speaking.