After spending the winter in Belgrade with his army, Jemiscsi Haszán, the leader of the campaign that tried to retake Székesfehérvár the year before, left for the region at the end of June.

[1] Since December of last year, Colonel Giovanni Marco Isolano and his vice captain, Wathay Ferenc, who rose to prominence as a poet and warrior in the Borderlands, have been defending Fehérvár Castle.

On 14 August, however, they repulsed the Ottoman attack on Sziget, the other outlying city, even though it took a sizable force and ferocious combat to win.

Field Marshal Russwurm announced on 23 August that he would go to the aid of the castle within 3 days; however, as his strength was low, he later renounced this intention.

The besiegers managed to breach the round bastion and the tower located on the southern side of the fort, despite being routed at the northern entrance.

Upon noticing this, the French and Italian mercenaries working for the Ottomans scaled the walls, forced their way through the gates, and as soon as they were open, they massacred everyone in their way and captured between 250 and 300 prisoners.