Battle of Faesulae
224 BCE.
Shown on the map at 43.460°, 12.386°.
The Battle of Faesulae was fought in 225 BC between the Roman Republic and a group of Gauls living in Italy. The Gauls defeated the Romans, but later the same year, a decisive battle at Telamon had the opposite outcome.
Text from the Wikipedia article Battle of Faesulae (225 BC), licensed CC BY-SA 4.0.