Originally Posted by Polybius
7 The Insubres and Boii wore their trousers and light cloaks, 8 but the Gaesatae had discarded these garments owing to their proud confidence in themselves, and stood naked, with nothing but their arms, in front of the whole army, thinking that thus they would be more efficient, as some of the ground was overgrown with bramblesa which would catch in their clothes and impede the use of their weapons
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7 Very terrifying too were the appearance and the gestures of the naked warriors in front, 8 all in the prime of life, and finely built men, and all in the leading companies richly adorned with gold torques and armlets. 9 The sight of them indeed dismayed the Romans, but at the same time the prospect of winning such spoils made them twice as keen for the fight. 30 But when the javelineers advanced, as is their usage, from the ranks of the Roman legions and began to hurl their javelins in well-aimed volleys, the Celts in the rear ranks indeed were well protected by their trousers and cloaks, 2 but it fell out far otherwise than they had expected with the naked men in front, and they found themselves in a very difficult and helpless predicament. 3 For the Gaulish shield does not cover the whole body; so that their nakedness was a disadvantage, and the bigger they were5 the better chance had the missiles of going home.