The history of this party is centered on the cities of Eger (German for present-day Cheb) and Aussig (Ústí nad Labem), it originated and gave the impetus for Austrian National Socialism.

However, the new Czech-dominated government demanded the unity of the Bohemian (or now called Czech) lands, as confirmed by the 1919 Treaty of Saint-Germain-en-Laye, and considered the Pan-German party offensive and dangerous for the existence of the country.

At first he advocated the Ständestaat concept of the Austrofascist movement according to the ideas of Othmar Spann and would have rather preferred the affiliation with the Federal State of Austria than with Nazi Germany.

In November 1937 Adolf Hitler openly declared – according to the Hossbach Memorandum – his intention to separate the Sudetenland from the Czechoslovak state.

The SdP officially coordinated this policy with Nazi leaders in order to integrate the German-speaking parts of Bohemia and Moravia into the German Reich.

After a last convention at Aussig, the organization officially merged into the German Nazi Party at a festive ceremony in Reichenberg (Liberec) on 5 November 1938.

He was officially appointed Gauleiter in 1939, an office he held until 1945, though largely losing power to Reich Protector Heydrich.

[4] The SdP branches in areas that remained in Czechoslovakia after the Sudetenland annexation formed the German People's Group in Czecho-Slovakia (Deutsche Volksgruppe in der Tschecho-Slowakei).