The Saalschutz Abteilung (hall defense detachment) of the Nazi Party is renamed the Sturmabteilung (storm detachment) after a large riot in Munich.

The Sturmabteilung (German: [tmaptal] (listen); SA; literally "Storm Detachment") was the original paramilitary wing of the Nazi Party. It played a significant role in Adolf Hitler's rise to power in the 1920s and 1930s. Its primary purposes were providing protection for Nazi rallies and assemblies, disrupting the meetings of opposing parties, fighting against the paramilitary units of the opposing parties, especially the Roter Frontkmpferbund of the Communist Party of Germany (KPD) and the Reichsbanner Schwarz-Rot-Gold of the Social Democratic Party of Germany (SPD), and intimidating Romani, trade unionists, and especially Jews.

The SA were colloquially called Brownshirts (Braunhemden) because of the colour of their uniform's shirts, similar to Benito Mussolini's blackshirts. The official uniform of the SA was the brown shirt with a brown tie. The color came about because a large shipment of Lettow-shirts, originally intended for the German colonial troops in Germany's former East Africa colony, was purchased in 1921 by Gerhard Robach for use by his Freikorps paramilitary unit. They were later used for his Schill Youth organization in Salzburg, and in 1924 were adopted by the Schill Youth in Germany. The "Schill Sportversand" then became the main supplier for the SA brown shirts. The SA developed pseudo-military titles for its members, with ranks that were later adopted by several other Nazi Party groups, chief amongst them the Schutzstaffel (SS), which originated as a branch of the SA before it was separated from it after the Night of the Long Knives.

After Adolf Hitler ordered the Night of the Long Knives (die Nacht der langen Messer) in 1934, he withdrew his support for the SA. The SA continued to exist but had lost almost all its influence, and was effectively superseded by the SS, which had carried out Hitler's orders in the purge, and thereafter was formally removed from the SA. The SA remained in existence until after Nazi Germany's final capitulation to the Allies in 1945, after which it was disbanded and outlawed by the Allied Control Council.

The Nazi Party, officially the National Socialist German Workers' Party (German: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor, the German Workers' Party (Deutsche Arbeiterpartei; DAP), existed from 1919 to 1920. The Nazi Party emerged from the extremist German nationalist, racist and populist Freikorps paramilitary culture, which fought against the communist uprisings in post–World War I Germany. The party was created to draw workers away from communism and into völkisch nationalism. Initially, Nazi political strategy focused on anti–big business, anti‑bourgeois, and anti‑capitalist rhetoric. This was later downplayed to gain the support of business leaders, and in the 1930s the party's main focus shifted to antisemitic and anti‑Marxist themes.Pseudoscientific racist theories were central to Nazism, expressed in the idea of a "people's community" (Volksgemeinschaft). The party aimed to unite "racially desirable" Germans as national comrades, while excluding those deemed to be either political dissidents, physically or intellectually inferior, or of a foreign race (Fremdvölkische). The Nazis sought to strengthen the Germanic people, the "Aryan master race", through racial purity and eugenics, broad social welfare programs, and a collective subordination of individual rights, which could be sacrificed for the good of the state on behalf of the people. To protect the supposed purity and strength of the Aryan race, the Nazis sought to exterminate Jews, Romani, Poles and most other Slavs, along with the physically and mentally disabled. They disenfranchised and segregated homosexuals, black people, Jehovah's Witnesses, and political opponents. The persecution reached its climax when the party-controlled German state set in motion the Final Solution—an industrial system of genocide which achieved the murder of around 6 million Jews and millions of other targeted victims, in what has become known as the Holocaust.Adolf Hitler, the party's leader since 1921, was appointed Chancellor of Germany by President Paul von Hindenburg on 30 January 1933. Hitler rapidly established a totalitarian regime known as the Third Reich. Following the defeat of the Third Reich at the end of World War II in Europe, the party was "declared to be illegal" by the Allied powers, who carried out denazification in the years after the war both in Germany and in territories occupied by Nazi forces. The use of any symbols associated with the party is now outlawed in many European countries, including Germany and Austria.