Together with the Dragoons and Hussars, the Imperial and Royal Uhlans (German: k.u.k. Ulanen), made up the cavalry of the Austro-Hungarian Army from 1867 to 1918, both in the Common Army and in the Austrian Landwehr, where they were known as the Imperial-Royal Landwehr Uhlans (k.k. Landwehr-Ulanen).
The Austrian monarchy, weakened by losing the war against Prussia in 1866, effectively had to guarantee the autonomy of the Kingdom of Hungary in the so-called Compromise of 15 March 1867. As a result, the Hungarian half of the Empire immediately began to establish its own army, the Royal Hungarian Landwehr (Hungarian: Magyar Királyi Honvédség).
Following the signing of the Compromise, the Austrian half of the Empire also started to build an army, the Imperial-Royal Landwehr (German: k.k. Landwehr). The two new Landwehr forces thus existed alongside the Common Army (Gemeinsame Armee), the imperial army of the whole Empire. In effect this meant that Austria-Hungary had three separate armies at the same time.
The Common Army has 11 Uhlan regiments and the Austria Landwehr 6 regiments. By tradition the majority of Uhlans were recruited from the Kingdom of Galicia and Lodomeria. The regiments were also stationed there, with few exceptions.
