Battle of Gavinana
1530 CE.
Shown on the map at 43.933°, 10.917°.
The Battle of Gavinana took place during the War of the League of Cognac. It was fought on 3 August 1530 between the city of Florence and the army of the Holy Roman Empire.
Text from the Wikipedia article Battle of Gavinana, licensed CC BY-SA 4.0.