Livy writes that Cornelius then advanced from Saticula and led his army through a mountain pass which descended into a narrow valley. Unnoticed by the consul the Samnites had occupied the surrounding heights and were waiting for the Roman army to descend into the valley. When the Romans finally discovered the enemy it was too late to retreat.
P. Decius Mus, a Roman
military tribune, observed that the Samnites had failed to occupy a hilltop overlooking the Samnite camp. With the consul's approval he led a detachment made up of the
hastati and
principes of one legion to seize the hill. The Samnites did not discover Decius until he was nearly at the summit and were then so distracted that they allowed the consul to withdraw the Roman army to more favourable ground. With the escape of the consul the Samnites focused their attention on Decius and his men. They surrounded the hilltop, but had not yet decided whether to risk an assault when night set in. Surprised that he had not been attacked, Decius sneaked down with his
centurions to scout out the Samnite positions. Once back in his camp, Decius silently assembled his men and informed them that he intended to break out at night, silently if they could, by force if they were discovered. Moving in the spaces between the Samnite pickets, the Romans were halfway through when they were discovered. But when Decius and his men let out a battle cry the awakening Samnites were flung into chaos and the Romans cut their way through. Next morning the Roman army celebrated the safe return of Decius and his men. At the urgings of Decius, the consul ordered his army to attack the Samnites. The Samnites were taken wholly unprepared for battle and were scattered and their camp taken. The 30,000 Samnites who had fled into the camp were all killed. After the battle the consul summoned an army assembly where he presented Decius with a golden chaplet, a hundred oxen and one white ox with gilded horns. His men each received double rations, one ox and two tunics. The soldiers then gave Decius two
grass crowns, the first for saving the whole army and the second for then saving his own men. While thus decorated, Decius sacrificed the white ox to Mars, and gave the one hundred oxen away to the men who had followed him. The army also contributed a pound of meal and a pint of wine to each of them. This battle is also known from several other ancient authors, though not in the same detail as Livy's account. The battle is mentioned in fragments preserved from
Dionysius and
Appian's histories.
Frontinus in his
Stratagems lists twice how P. Decius' saved the army of Cornelius Cossus The anonymous author of the 4th century AD
De viris illustribus attributes the acts of P. Decius to the
Battle of Mount Gaurus.
Cicero writes in his
De Divinatione, that according to the annals, when Decius rushed boldly into battle and was warned to be more cautious, he replied that he had dreamt he would win great fame by dying in the midst of the enemy, foreshadowing his famous later death at the
Battle of Vesuvius in 340 BC. This detail shows that some material on this battle existed which Livy did not include in his account. ==Aftermath==