Titus Livius (Livy), The History of Rome, Book 3
Benjamin Oliver Foster, Ph.D., Ed.

30. The next consuls were Quintus Minucius¹ and Marcus Horatius Pulvillus, At the beginning of the year, though foreign relations were peaceful, at home there were dissensions, inspired by the same tribunes and the same law; [2] and they would have proceeded to even greater lengths —so inflamed were men's passions —had it not been announced, as if designedly, that the garrison at Corbio had perished in a night-attack made by the Aequi. [3] The consuls convoked the senate, and were directed to make a summary levy and lead the army to Mount Algidus. [4] From that moment the quarrel over the law was laid aside, and a fresh dispute arose, concerning the levy; in this consular authority was in a fair way to be defeated, by the help of the tribunes, when a new alarm was reported: that a Sabine army bent on pillage had descended upon the Roman fields, and was thence approaching the City. [5] This was such staggering news that the tribunes permitted the enrolment of troops; yet not without having obtained an agreement that since they had themselves been baffled for five years,² and the existing tribunate was an insufficient protection to the plebs, ten tribunes [p. 103]should in future be elected. [6] To this the patricians³ were compelled to agree, only stipulating that they should not thereafter see the same men tribunes. [7] The tribunician election was held immediately, lest when the war was over this promise too might be broken, as the others had been. In the thirty-sixth year from the first plebeian tribunes ten men were elected, two from each class,⁴ and it was enacted that they should be chosen thus thereafter. [8] The levy was then held, and Minucius marched against the Sabines, but did not find the enemy. Horatius, after the Aequi, having put the garrison at Corbio to the sword, had also captured Ortona, fought a battle with them on Mount Algidus, killed many men, and drove off the enemy, not only from Algidus, but from Corbio and Ortona. Corbio he razed because of its betrayal of the garrison.