be challenged and removed. (November 2007) Battle of AnkaraPart of the Ottoman-Timurid warsDate July 20 , 1402 Location Çubuk field, near Ankara ResultDecisive Timurid victoryCombatants Timurid Empire Ottoman Empire Serbia Commanders Timur Beyazid I # Stefan Lazarević Strength140,000 Turco-Mongols65,000 Turks, 20,000 Serbs [1] Casualties15,000-25,000 killed and wounded[ citation needed ]15,000-40,000 killed and