The Battle of Vercellae or Battle of the Raudine Plain was fought on 30 July 101 BC on a plain near Vercellae in Gallia Cisalpina (modern-day Northern Italy). A Celto-Germanic confederation under the command of the Cimbric king Boiorix was defeated by a Roman army under the joint command of the consul Gaius Marius and the proconsul Quintus Lutatius Catulus.The battle marked the end of the Germanic threat to the Roman Republic.