Battle of Tripolje
1402 CE.
Shown on the map at 42.600°, 21.200°.
The Battle of Tripolje (Serbian Cyrillic: битка код Трипоља/бој на Трипољу), also known as the Battle of Gračanica (Грачаничка битка), was fought in November 1402 between the Serbian Despotate, ruled by the Lazarević dynasty, and the Branković family, aided by the Ottoman Empire. Following the Ottoman defeat at Ankara in 1402, Serbian ruler Stefan Lazarević saw an opportunity to free himself of Ottoman overlordship. Awarded the high honorary title of despot by Byzantine Emperor Manuel II Palaiologos, Lazarević began to wield increasing autonomy in his political decision making. Following a quarrel said to have arisen because of his nephew Đurađ Branković's intent to join forces with the new Ottoman sultan, Lazarević had Branković imprisoned. Freed by a friend, Branković joined the Ottoman ranks and was set to fight Lazarević. Buoyed by Ottoman reinforcements, Branković set up in Kosovo, along the route through which Lazarević would return from the Adriatic coast to the Serbian interior. The two sides clashed at the field of Tripolje (near Gračanica) on 21 November 1402.
Text from the Wikipedia article Battle of Tripolje, licensed CC BY-SA 4.0.