From a comparison of the chronicles, one does not get a clear idea of what happened after the failure of the assault of the chevaliers. A battle in which the bulk of the forces on either side were engaged undoubtedly followed. But it is impossible to state whether Sigismund followed up the way opened for him through the Ottoman lines by the French charge, or whether the Hungarians and their auxiliaries were on the defensive. Froissart and Morosini infer that Sigismund did not attempt to fight after the failure of the chevaliers, and it was believed in western Europe that the disaster of Nicopolis was due to the failure of Sigismund to support the chevaliers rather than to their own folly. The Hungarians and their king were bitterly denounced by the French survivors.[535] On the other hand, Schiltberger, who took part in the battle, declares that the king of Hungary was advancing in force, and that Bayezid was preparing to retreat, when the Osmanlis received sudden and substantial support from the krai of Serbia.[536] The Serbians were so completely under Ottoman control after the battle of Kossova, that they made no attempt to throw off the yoke of Bayezid.[537] In Asia Minor as in the Balkan peninsula, against the Karamanians and Tartars as against the crusaders, at Nicopolis as at Angora, the Serbian auxiliaries were faithful supporters of Bayezid. Nicopolis was certainly won with the aid of the Christians of the Balkan peninsula. It was not only the Serbian reinforcements which won the day for the Osmanlis. As soon as Mircea of Wallachia saw how the battle was going, he quickly withdrew from the field, and got his forces across the Danube before the panic started.