1As the Romans on that side were already giving ground, Marcus Valerius, Publicola's brother, catching sight of the young Tarquinius boldly showing himself off in the front rank of the exiles, and fired also by the glory of his house, so that the family which had won honour from the expulsion of the kings might win it also from their death, sets spurs to his horse and makes for Tarquinius with levelled javelin. 2Tarquinius drew back before his furious enemy into the ranks of his own men. 3As Valerius rode recklessly into the line of the exiles, someone attacked him from the flank and ran him through; and since his horse was in no way slowed by its rider's wound, the dying Roman slid to the ground, his arms falling over his body.
4When the dictator Postumius noticed that such a man had fallen, that the exiles were charging boldly at a run, and that his own men were shaken and giving way, he gives the signal to his cohort, a picked band which he kept about him as a guard, to treat as an enemy any of their own men they saw in flight. 5So, caught between two fears, the Romans turned from flight against the enemy and the line was restored. 6The dictator's cohort then entered the battle for the first time; 6fresh in body and spirit, they attack the weary exiles and cut them down. 7Then another fight broke out among the leading men.
7The Latin commander, when he saw the cohort of exiles almost surrounded by the Roman dictator, hurries several maniples from the reserves into the front line with him. 8The legate Titus Herminius, catching sight of them as they came on in column and recognising among them Mamilius, conspicuous by his dress and armour, joined battle with the enemy leader with so much greater force than the master of the horse a little before, that he both killed Mamilius, running him through the side with a single thrust, and was himself struck by a javelin while stripping his enemy's body; and though he was carried back to camp as victor, he breathed his last while his wound was first being dressed.
10Then the dictator flies to the cavalry, imploring them, since the infantry were now exhausted, to dismount from their horses and take up the fight. 10They obeyed the order: they leap down from their horses, rush forward to the front, and hold their shields before the front-rank men. 11The infantry line at once recovers its spirit, when it saw the young nobles fighting on equal terms and sharing part of the danger with them. 12Then at last the Latins were driven back, and their line, shaken, gave way. 12Horses were brought up to the cavalry so that they could pursue the enemy; 12the infantry line followed as well. 12Then the dictator, neglecting no help either divine or human, is said to have vowed a temple to Castor and to have announced rewards for the soldiers who should be first and second to enter the enemy's camp; 12and so great was their ardour that the Romans took the camp in the same charge with which they had routed the enemy.
13Such was the battle fought at Lake Regillus. 13The dictator and the master of the horse returned to the city in triumph.