In 1814, he again served as officer in the Austrian army, as a commander of the Ogulin regiment at Banat and Lika.

He then was brigade commander under Joseph Radetzky von Radetz, after which he was awarded with the Great Cross of the Iron Crown.

[3] The Serbs demanded a national unit consisting of Banat, Backa, Baranja and part of Srem, known collectively as Vojvodina.

[3] General Stratimirović, head of the main committee, on 10 May, urged Prince Aleksandar for assistance and asked Stevan Knićanin, a commissioner, to intercede.

Hungarians were not friendly to the Serbs at this time, but support came from Vienna – the new emperor Franz Joseph approved the establishment of the Serbian Vojvodina, with Šupljikac as Duke.