The tribe of the Cananefates was living in lands between the Batavians and the North Sea. The inducements used by Civilis to instigate rebellion are not known, but the Cananefates, led by their chief Brinno, attacked several Roman forts, including Traiectum (Utrecht). With most of the troops in Italy fighting in the civil war, the Romans were caught off guard. Flaccus, commander of the Rhine legions, sent auxiliary troops to control the situation. The result was another disaster for the Romans. Civilis assumed the role of mastermind of the rebellion and defeated the Romans near modern Arnhem.