In the battle of Kolare, at the beginning of August 1793, he managed to prevent janissaries and the renegade Osman Pazvantoğlu to place Belgrade Pashaluk under his administration.
It was rumored that his special army that he led numbered over 16,000 Serbs, mostly composed of Raja (meaning "common folk") and former Free Corps veterans.
[10][11] In 1797, a military expedition of Husein Kučuk-Alija-Pasha failed to conquer Vidin or capture Osman Pazvantoğlu, so he and the Janissaries, at the end of November, tried again to annex the Smederevo Sandzak.
The tactical members of the Sublime Porte soon realized that the stability of the Ottoman Empire was quite shaken and immediately took harsh measures against the Serbs who took part in the Austro-Turkish War, and many like Koča Anđelković and Rigas Feraios were killed after capture.
[13] In 1799, the port was issued by Firman, who allowed the return of the Janissaries, and the Sultan Selim III forgave Pazvantoğlu's rebellion and appointed him Pasha.