Siege of Novo Brdo
1440 CE.
Shown on the map at 42.600°, 21.433°.
The siege of Novo Brdo was a military blockade of Novo Brdo, an important fortified mining town in the Serbian Despotate, by the forces of the Ottoman Empire. The siege began in 1440 and lasted until the capture of the fortress on 27 June 1441. During the siege, the Serbian garrison was supported by the local community of citizens of the Republic of Ragusa.
Text from the Wikipedia article Siege of Novo Brdo (1440–1441), licensed CC BY-SA 4.0.