Battle of Alessandria
1391 CE.
Shown on the map at 44.917°, 8.617°.
The Battle of Alessandria or Battle of Castelazzo was a battle during the Florentine–Milanese Wars which was fought at Alessandria, Piedmont, Italy on 25 July 1391 between the mercenary army of Gian Galeazzo Visconti of Milan and a French army in Florentine service, under Jean III of Armagnac. It ended in victory for Milan.
Text from the Wikipedia article Battle of Alessandria, licensed CC BY-SA 4.0.