Ulrich Graf
Shortly after the First World War, Graf became a member of the German Workers' Party (DAP). Later, the DAP was renamed the National Socialist German Workers' Party (NSDAP; Nazi Party) and taken over by Adolf Hitler. Founded in 1920, the "Sturmabteilung" (SA) was the first of many paramilitary protection squads that worked to protect Nazi officials. These storm troopers, outfitted in brown uniforms, were initially charged with the duty of keeping order at Nazi Party meetings. They soon expanded their role to include disruption of rival political party's functions. Graf was an early member of the SA. In 1921, he became member number 2882 of the Nazi Party.
Führerprinzip
In the case of the Nazis, the "Führerprinzip" became integral to the Nazi Party in July 1921, when Adolf Hitler forced a showdown with the original leaders of the party after he learned that they were attempting to merge it with the somewhat larger German Socialist Party. Learning of this, and knowing that any merger would dilute his influence over the group, Hitler quit the Nazis. Realizing that the party would be completely ineffective without Hitler as their front man, the founder of the party, Anton Drexler, opened negotiations with Hitler, who delivered an ultimatum: he must be recognized as the sole leader ("Führer") of the party, with dictatorial powers. The executive committee gave in to his demands, and Hitler rejoined the party a few days later to become its permanent ruler, with Drexler kicked upstairs to be honorary chairman for life.