Hunyadi hired 5,000 Hungarian, Czech and Polish mercenaries and sent them to Belgrade, which was the key fortress of the defense of Hungary's southern frontiers.
Yohanes mengupah 5.000 tentara bayaran Hongaria, Ceko, serta Polandia, dan mengirim mereka ke Beograd, benteng pertahanan kerajaan di tapal batas selatan Hongaria.