The siege of Golubac (Hungarian: Galambóc) was a military conflict between the Hungarian–Wallachian–Lithuanian alliance and the Ottoman Empire in May 1428. This siege was the first battle in Hungarian military history in which the Hungarian army used significant artillery. However, they could not capture Golubac and were defeated by the Ottoman main army, led by Sultan Murad II. After the battle, most of Serbia and Bosnia was conquered by the Ottoman Army.
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