When Tarquin now found that he had no hopes of further assistance from Porsenna and his Etruscan friends, he went and dwelt at Tusculum, where Mamilius Octavius, his son-in-law, was still chief. Then the thirty Latin cities combined together and made this Octavius their dictator, and bound themselves to restore their old friend and ally, King Tarquin, to the sovereignty of Rome.
P. Valerius, who was called "Poplicola," was now dead, and the Romans looked about for some chief worthy to lead them against the army of the Latins. Poplicola had been made consul four times, and his compeers acknowledged him as their chief, and all men submitted to him as to a king. But now the two consuls were jealous of each other; nor had they power of life and death within the city, for Valerius (as we saw) had taken away the axes from the fasces. Now this was one of the reasons why Brutus and the rest made two consuls instead of one king: for they said that neither one would allow the other to become tyrant; and since they only held office for one year at a time, they might be called on to give account of their government when their year was at an end.
Yet though this was a safeguard of liberty in times of peace, it was hurtful in time of war, for the consuls chosen by the people in their great assemblies were not always skilful generals; or if they were so, they were obliged to lay down their command at the year's end.
So the senate determined, in cases of great danger, to call upon one of the consuls to appoint a single chief, who should be called "dictator," or master of the people. He had sovereign power (
And now it appeared to be a fit time to appoint such a chief, to take the command of the army against the Latins. So the first dictator was T. Lartius, and he made Spurius Cassius his master of the horse. This was in the year B.C. 499, eight years after the expulsion of Tarquin.
But the Latins did not declare war for two years after. Then the senate again ordered the consul to name a master of the people, or dictator; and he named Aul. Postumius, who appointed T. Æbutius (one of the consuls of that year) to be his master of the horse. So they led out the Roman army against the Latins, and they met at the Lake Regillus, in the land of the Tusculans. King Tarquin and all his family were in the host of the Latins; and that day it was to be determined whether Rome should be again subject to the tyrant and whether or not she was to be chief of the Latin cities.
King Tarquin himself, old as he was, rode in front of the Latins in full armor; and when he descried the Roman dictator marshalling his men, he rode at him; but Postumius wounded him in the side, and he was rescued by the Latins. Then also Æbutius, the master of the horse, and Oct. Mamilius, the dictator of the Latins, charged one another, and Æbutius was pierced through the arm, and Mamilius wounded in the breast. But the Latin chief, nothing daunted, returned to battle, followed by Titus, the king's son, with his band of exiles. These charged the Romans furiously, so that they gave way; but when M. Valerius, brother of the great Poplicola, saw this, he spurred his horse against Titus, and rode at him with spear in rest; and when Titus turned away and fled, Valerius rode furiously after him into the midst of the Latin host, and a certain Latin smote him in the side as he was riding past, so that he fell dead, and his horse galloped on without a rider. So the band of exiles pressed still more fiercely upon the Romans, and they began to flee.