Battle of Ankara 20 July 1402 The otoman army also included christian soldiers led by Gjon Kastrioti (Skanderbeg\'s father) together with other Ottoman vassals from Albania (Koja Zaharia, Dhimiter Jonima and serbian despot Stefan lazarevic. Fall of Constantinople 6 April – 29 May 1453 The Ottomans, on the other hand, had a larger force including thousands of Christian troops, notably 1,500 Serbian cavalry that the Serbian despot Đurađ Branković. Many of the sappers were miners sent from Novo Brdo by the Serbian Despot. Iza nevedenih bitaka jasno se vidi \"kako\" su srbi to branili krscanstvo pa bili su u prvim redovima kada je trebalo kasapiti krscane, bili su u jurisnim odredima koji su osvojili konstantiopolj za turke. Pateticno odano su sluzili turke svo vrijeme a protiv krscanstva srbi su izdali i krscanstvo i pravoslavlje jer obozavaju slavu vidovdan (dan svetogvida) staroslavenskog paganskog Bo.ga