The Battle of Canusium was an engagement during the Social War. A Roman force under Gaius Cosconius had won a string of victories, winning multiple sieges including one at Cannae. A Samnite force under Trebatius now engaged Cosconius, and he was forced to retreat over a river. When the pursuers attempted to cross, Cosconius made a counter-attack. Both sides suffered heavy casualties.
Fetching the article from Wikipedia…
Text from the Wikipedia article “Battle of Canusium”, available under CC BY-SA 4.0.