Habsburg-occupied Serbia (1788–1791)

Koča's frontier (Serbian: Кочина крајина / Kočina krajina) refers to the Serbian territory established in the Sanjak of Smederevo, Ottoman Empire, during the Austro-Turkish War (1788–1791) in the 1788 . The Habsburg-organized Serbian Free Corps, among whom Koča Anđelković was a prominent captain (hence the historiographical name), initially held the central part of the sanjak, between February and September 7, 1791; after the Austrians entered the conflict the territory was expanded and became a Habsburg protectorate under military administration, called Serbia (German: Serbien). After the Austrian withdrawal and Treaty of Sistova (1791), the territory was regained by the Ottomans.