Hitler is Discharged from the Army and Begins Participating Full-Time in the German Workers' Party (DAP)
Hitler was discharged from the army in March 1920 and with his former superiors' continued encouragement began participating full time in the party's activities.
By early 1921, Hitler was becoming highly effective at speaking in front of large crowds. In February, Hitler spoke before a crowd of nearly six thousand in Munich. To publicize the meeting, he sent out two truckloads of party supporters to drive around with swastikas, cause a commotion and throw out leaflets, their first use of this tactic. Hitler gained notoriety outside of the party for his rowdy, polemic speeches against the Treaty of Versailles, rival politicians (including monarchists, nationalists and other non-internationalist socialists) and especially against Marxists and Jews.
Not long after the February speech he was discharged from the army. Hitler continued to expand his influence in the party and began to form a private group of thugs which he used to quash disorder at party meetings and later to break up rival party's meetings. This group subsequently became the Sturmabteilung or S.A. - Hitler's brown shirted storm troopers. He also became the regular main speaker at party events from then onwards, attracting large crowds for each meeting. During the summer of 1920 Hitler chose the swastika as the Nazi party emblem.