Lovat River
The fortress of Velikiye Luki, located by the Lovat River, was made of wood and earth. Next to it, a wooden town stood, which was burned by the Commonwealth forces so as it would not give cover to the defenders. The siege began on September 1 with an artillery barrage and infantry attack. Velikiye Luki was set in flames, and the still burning fortress surrendered on September 5. Hungarian mercenaries, who were first to enter it, began widespread looting, not paying attention to the fire, which in the meantime reached the gunpowder magazine. The magazine exploded, killing app. 200 Poles and Hungarians, together with defenders of the fortress.