The Austrian SS was that portion of the SS membership from Austria. The term and title was used unofficially, especially before the year 1938. They were never officially recognized as a separate branch of the SS. Austrian SS members were seen as regular personnel and they served in every branch of the SS.
The term "Austrian SS" is often used to describe that portion of the SS membership from Austria, but it was never a recognized branch of the SS. In contrast to SS members from other countries, who were grouped into either the Germanic-SS or the Foreign Legions of the Waffen-SS, Austrian SS members were regular SS personnel. It was technically under the command of the SS in Germany, but often acted independently concerning Austrian affairs. The Austrian SS was founded in 1930 and, by 1934, was acting as a covert force to bring about the Anschluss with Germany, which occurred in March 1938. Early Austrian SS leaders were Ernst Kaltenbrunner and Arthur Seyss-Inquart. Austrian SS members served in every branch of the SS, including concentration camps, Einsatzgruppen, and the Security Services. Political scientist David Art of Tufts University notes that Austrians comprised 8 per cent of the Third Reich's population and 13 percent of the SS; he states that 40 per cent of the staff and 75 per cent of commanders at death camps were Austrian.
Austrian SS men were organized under the same manner as the Allgemeine-SS but operated as an underground organization, in particular after 1936 when the Austrian government declared the SS an illegal organization. One of the largest formations of the Austrian SS was the 11th SS-Standarte operating out of Vienna. The Austrian SS used the same rank system as the regular SS, but rarely used uniforms or identifying insignia. Photographic evidence indicates that Austrian SS men typically would wear a swastika armband on civilian clothes, and then only at secret SS meetings.
After 1938, when Austria was annexed by Germany, the Austrian SS was folded into SS-Oberabschnitt Donau with the 3rd regiment of the SS-Verfugungstruppe, Der Führer, and the fourth Totenkopf regiment, Ostmark, recruited in Austria shortly thereafter. Mauthausen was the first concentration camp opened in Austria following the Anschluss. Starting with a single camp at Mauthausen, the complex expanded over time and by the summer of 1940 Mauthausen had become one of the largest labour camp complexes in the German-controlled part of Europe, with four main subcamps at Mauthausen and nearby Gusen, and nearly 100 other subcamps located throughout Austria and southern Germany, directed from a central office at Mauthausen.