Battle of Pavia
271 CE.
Shown on the map at 45.183°, 9.150°.
The Battle of Pavia or Battle of Ticinum was fought in 271 near Ticinum (Pavia) in Italy, and resulted in the Emperor Aurelian destroying the retreating Juthungian army.
Text from the Wikipedia article Battle of Pavia (271), licensed CC BY-SA 4.0.