He appears, along with Pullo, in Caesar's Commentarii de Bello Gallico, Book 5, Chapter 44. The episode describes the two as centurions, approaching the first ranks, who shared a bitter rivalry. It related how Pullo had charged the enemy (the Nervii) in the heat of battle. He then cast his javelin at one of the enemy from a short distance, but he was in turn pierced by a spear and surrounded by other Nervii who prevented him from drawing his sword. At that moment, his rival Vorenus, who had followed him from the fortifications, reached the site of the mêlée and drew the enemy's attention away from Pullo by engaging in hand-to-hand combat with those assailing him. After slaying one of the enemy and driving back the rest, Vorenus lost his footing on the irregular terrain. As the Nervii drew closer to him, Pullo came to his rescue. After slaying many of their opponents, the two retreated to the fortifications amidst roaring applause from their comrades in arms.