 Polybius' Histories describe how the Gaesatae, hired by other Celtic peoples, the Boii and Insubres as mercenaries to fight the Romans, stood naked at the head of their army at the Battle of Telamon in 225BC.The Boii and Insubres at this very battle are described fighting barechested, retaining only their trousers, shoes and cloaks.Diodorus Siculus reported other instances of such combat