Austrians
Historically, Austrians were regarded as ethnic Germans and viewed themselves as such. Austria was part of the Holy Roman Empire and the German Confederation until the Austro-Prussian war in 1866 which resulted in Prussia expelling Austria from the Confederation. Thus, when Germany was founded as a nation-state in 1871, Austria was not a part of it. In 1867, Austria was reformed into the Austro-Hungarian Empire. After the collapse of the Austro-Hungarian Empire in 1918 at the end of World War I, Austria was reduced to a rump state and adopted and briefly used the name the Republic of German-Austria ("Republik Deutschösterreich") in an attempt for union with the Republic of Germany, but was forbidden due to the Treaty of Saint-Germain-en-Laye (1919). The First Austrian Republic was founded in 1919. The Third Reich annexed Austria with the "Anschluss" in 1938.
German nationalism in Austria
One of the foundational problems of the First Republic was that those who had supported the concept of a democratic republic from the German Austria period onward, such as the Social Democrats, did not consider themselves "Austrian", but instead were German nationalists. Those who supported an Austrian national identity, an Austria without the word "German" attached, were conservative and largely undemocratic in persuasion: former Imperial bureaucrats, army officers, priests, aristocrats, and affiliated with the Christian Social Party. In the words of historian A. J. P. Taylor, "The democrats were not 'Austrian'; the 'Austrians' were not democrats." These two groups, the German nationalist democrats, and the Austrian nationalist conservatives, would squabble throughout the first decade of the First Republic. Ultimately, the Austrian nationalist faction would overthrow the democratic republic in 1934 and establish a regime rooted in "Austrofascism" under the protection of Fascist Italy.