At the head of this body was Appius Claudius. The laws of Rome had previously been only partly written, the remainder being held in memory or transmitted as traditions. A complete code of written laws was desired, and to this work the decemvirs set themselves diligently. After a few months they prepared a code of laws, which was accepted by nobles and people alike as fair and satisfactory, and it was ordered that these laws should be engraved upon ten tables of brass and hung up in the comitium, or place of assembly of the people, where all might read them and learn under what laws they lived. It is probable that the plebeian demand for reform was so great that the decemvirs did not dare to disregard it.

At the end of the year of office of these officials it was felt that they had done so well that it was thought wise to continue them in power for another year. But when the time for election came round, Appius Claudius managed to have his nine associates defeated, he alone being re-elected. The other nine chosen were men whom he felt sure he could control. And now, having a year's rule assured him, he threw off the cloak of moderation he had worn, and began a career of oppression of the plebeians, aided by his subservient associates. The first step taken was to add two new laws to the code, which became known, therefore, as the "Twelve Tables." These new laws proved so distasteful to the people that they almost broke into open rebellion. It was evident that the haughty decemvirs were seeking to increase the power of their class.

The decemvirs did not confine themselves to passing oppressive laws. They began a career of outrage and oppression that filled Rome with woe. The youthful patricians followed their lead, and insult and murder became common incidents in Rome. When the second year of the decemvirate expired, Appius and his colleagues, knowing that they could not be elected again, showed no intention of yielding up their authority. They were supported by the senate and the patricians, and had gained such power that they defied the plebeians. Those of the people who were active in opposition were quietly disposed of, and so intolerable became the tyranny that numbers of the plebeian party fled from Rome.

While this was going on war broke out with the Sabines and the Æquians. Of the armies sent against these nations, one was commanded by Lucius Sicinius Dentatus, among the bravest of the Romans, and who had fought in one hundred and twenty battles and was covered with the scars of old wounds. On his way to his post this veteran was murdered by bravos sent by Appius Claudius. Decemvirs were now appointed to command the armies, Appius and one of his colleagues remaining in Rome to look after the safety of the city.

The story goes that both armies were beaten by their foes, and forced to retreat within Roman territory. While they lay encamped, not many miles from Rome, an event occurred in the city which gave them new work to do, and proved that the worst enemies of Rome were not without, but within, her walls.

In the army sent against the Æquians was a centurion named Lucius Virginius, who had a beautiful daughter named Virginia, whom he had betrothed to Lucius Icilius, recently one of the tribunes of Rome. But the tyranny of the decemvirs was directed against the wives and daughters as well as the men of the plebeians, as was now to be strikingly shown.

One day, as the beautiful maiden was on her way, attended by her nurse, to school in the Forum (around which the schools were placed), she was seen by Appius Claudius, who was so struck by her beauty that he determined to gain possession of her, and sought to win her by insidious words. The innocent girl repelled his advances, but this only increased his desire to possess her, and he determined, as she was not to be had by fair means, to have her by foul. He therefore laid a wicked plot for her capture.

Marcus Claudius, one of his clients, instigated by him, seized the girl as she entered the Forum, claiming that she was his slave. The nurse screamed for help, and a crowd quickly gathered. Many of these well knew the maiden, her father, and her betrothed, and vowed to protect her from wrong. But the villain declared that he meant no harm, and that he only claimed his own, and was quite willing to submit his claim to the decision of the law.