The Kriegsschule was the military academy in Vienna

Vienna

Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

 at which officers for the armies of the Austrian Empire

Austrian Empire

The Austrian Empire was a modern era successor empire, which was centered on what is today's Austria and which officially lasted from 1804 to 1867. It was followed by the Empire of Austria-Hungary, whose proclamation was a diplomatic move that elevated Hungary's status within the Austrian Empire...

 and later the Austro-Hungarian Empire were trained from 1852 to 1918.

Established in 1852, the Kriegsschule was an outgrowth of the previous centers of Austrian military scholarship: the Kriegsarchiv and the Österreichische militärische Zeitschrift (Austrian Military Journal). Having been earlier suggested by the likes of officers including Joseph Radetzky von Radetz, it was organized early in the reign of Emperor Franz Josef. Among its students and faculty were such influential members of the Austro-Hungarian military as Count Franz Conrad von Hötzendorf, who attended the school and later taught tactics there from 1888 to 1892.