Serbian Free Corps
The Serbian Free Corps (German: Serbische Freikorps), known simply as frajkori (Serbian Cyrillic: фрајкори), was a volunteer militia composed of ethnic Serbs, established by the Habsburg monarchy, to fight the Ottoman Empire during the Austro-Turkish War (1787–1791). The rebellion in the Sanjak of Smederevo and militia's operations resulted in the period of Habsburg-occupied Serbia, which took place from 1788 to 1791.