In this battle Ottoman forces suffered defeat, Bayezid I and one of his sons, Musa Çelebi, were captured and the following year Bayezid died in captivity. One of the main reasons for the Ottoman defeat was due to the desertion of Turkic and Tartar cavalry from Anatolia, which prior to the beginning of the battle defected to Timur's side, unhappy with Bayezid's rule and due to a sense of camaraderie with the forces of Timur. This allowed the Timur's forces to break Bayezid's left wing and encircle his center, where was located the Sultan with his janissaries (around 10,000). On the right wing, there were Bayezid's vassals, among whom were Đurađ Branković and his brother Grgur, Stefan's brother Vuk, and Stefan himself, who was also a commander of the right wing. He fought bravely, which caused admiration from Timur. Prince Stefan and his knights, which according to chronicler Duka and several contemporaries, were 5000 heavily armed men with spears, including cavalry, repeatedly attacked the enemy lines in order to rescue his master Bayezid I from hostile environments. He eventually succeeded in it, but Bayezid refused to withdraw, after which Stefan took with him his son Süleyman Çelebi and started to retreat towards Bursa under constant attacks of the hordes of Tatars. Byzantine chronicler Laonikos Chalkokondyles states that "the Serbs fought as real heroes, each worthy of praise", adding that "They attacked Tatars with great vigor, crushing them hard in the fight", and about Serbian struggle there is evidenced toponym Srb-ghazi - Serbian winner, near Ankara.