Imperial-Royal Mountain Troops

The Imperial-Royal Mountain Troops (German: Kaiserlich-königliche Gebirgstruppe) were founded in 1906 as part of the Austrian Landwehr, the territorial army of the Cisleithanian half of the Austro-Hungarian Empire. As a result, the abbreviation "k.k." (for kaiserlich österreichisch, königlich böhmisch or "Imperial Austrian, Royal Bohemian") was used and not "k.u.k." ("Imperial and Royal") which would have implied a connexion with the Hungarian half of the Empire.

Source: Wikipedia — Imperial-Royal Mountain Troops (CC BY-SA 4.0)