Not only the Samnites but even the Romans were deceived, and the consul endorsed the mistake by shouting to his front rank so that the enemy could hear: “Cominium has fallen, my victorious colleague is coming on the field, do your best to win the victory before the glory of doing so falls to the other army!”

He rode along while saying this, and commanded the tribunes and centurions to open their ranks to allow passage for the cavalry. He had previously told Trebonius and Caedicius that when they saw him brandish his spear aloft they should launch the cavalry against the enemy with all the force they could.

His orders were carried out to the letter; the legionaries opened their ranks, the cavalry galloped through the open spaces, and with levelled spears charged the enemy's centre. Wherever they attacked they broke the ranks. Volumnius and Scipio followed up the cavalry charge and completed the discomfiture of the Samnites At last the dread of gods and men had yielded to a greater terror, the “linen cohorts” were routed;

those who had taken the oath and those who had not alike fled; the only thing they feared now was the enemy.

The bulk of the infantry who survived the actual battle were driven either into their camp or to Aquilonia, the nobility and cavalry fled to Bovianum. The cavalry were pursued by cavalry, the infantry by infantry; the wings of the Roman army separated, the right directed its course towards the Samnite camp, the left to the city of Aquilonia. The first success fell to Volumnius, who captured the Samnite camp.

Scipio met with a more sustained resistance at the city, not because the defeated foe showed more courage there, but because stone walls are more difficult to surmount than the rampart of a camp. They drove the defenders from their wails with showers of stones.

Scipio saw that unless his task was completed before the enemy had time to recover from their panic, an attack on a fortified city would be a somewhat slow affair. He asked his men whether they would be content to allow the enemy's camp to be captured by the other army, whilst they themselves after their victory were repulsed from the gates of the city.

There was a universal shout of “No!” On hearing this he held his shield above his head and ran to the gate, the men followed his example, and roofing themselves with their shields burst through into the city.This evolution was frequently practised. The shield (scutum) of the Roman legionary was a ponderous arrangement of stout planks, convex on the outside, about 4 ft. long and 21/2 broad. In forming the shield roof they held their shields horizontally over thier heads, of course on the left arm, and as the shields were broad enough to touch each other, the appearance was that of a roof of gigantic tiles. This was called by the Romans a testudo (tortoise shell) and was frequently used as a protection for storming parties. They dislodged the Samnites from the walls on either side of the gate, but as they were only a small body did not venture to penetrate into the interior of the city.

The consul was at first unaware of what was going on, and was anxious to recall his troops, for the sun was now rapidly sinking and the approaching night was making every place suspicious and dangerous, even for victorious troops.

After he had ridden forward some distance he saw that the camp on his right hand had been captured, and he heard at the same time the mingled clamour of shouts and groans arising in the direction of the city on his left; just then the fighting at the gate was going on.

As he approached more closely he saw his men on the walls and recognised that the position was no longer doubtful, since by the reckless daring of a few the opportunity for a brilliant success had been won. He at once ordered the troops whom he had recalled to be brought up and prepared for a regular attack on the city.

Those who were within bivouacked near the gate as night was approaching, and during the night the place was evacuated by the enemy.

The Samnite losses during the day amounted to 20,340 killed and 3870 made prisoners, whilst 97 standards were taken.

It is noticed in the histories that hardly any other general ever appeared in such high spirits during the battle, either owing to his fearless temperament or to the confidence he felt in his final success.

It was this dauntless and resolute character which prevented him from abandoning all idea of fighting when the omens were challenged. It was this, too, that made him in the very crisis of the struggle, at the moment when it is customary to vow temples to the gods, make a vow to Jupiter Victor that if he routed the legions of the enemy he would offer him a cup of sweetened wine before he drank anything stronger himself. This vow was acceptable to the gods and they changed the omens into favourable ones.