Veii, however, was only taken after a long and severe struggle. It was closely allied with Fidenae, a town of Latium, not more than five or six miles from Rome. The two cities frequently united their arms against Rome, and in one of these wars Lars Tolumnius, the king of Veii, was slain in single combat by A. Cornelius Cossus, one of the Military Tribunes, and his arms dedicated to Jupiter, the second of the three instances in which the _Spolia Opima_ were won (B.C. 437). A few years afterward Fidenae was taken and destroyed (B.C. 426), and at the same time a truce was granted to the Veientines for twenty years. At the expiration of this truce the war was renewed, and the Romans resolved to subdue Veii as they had done Fidenae. The siege of Veii, like that of Troy, lasted ten years, and the means of its capture was almost as marvelous as the wooden horse by which Troy was taken. The waters of the Alban Lake rose to such a height as to deluge the neighboring country. An oracle declared that Veii could not be taken until the waters of the lake found a passage to the sea. This reached the ears of the Romans, who thereupon constructed a tunnel to carry off its superfluous waters.[19] The formation of this tunnel is said to have suggested to the Romans the means of taking Veii. M. Furius Camillus, who was appointed Dictator, commenced digging a mine beneath the city, which was to have its outlet in the citadel, in the temple of Juno, the guardian deity of Veii. When the mine was finished, the attention of the inhabitants was diverted by feigned assaults against the walls. Camillus led the way into the mine at the head of a picked body of troops. As he stood beneath the temple of Juno, he heard the soothsayer declare to the king of the Veientines that whoever should complete the sacrifice he was offering would be the conqueror. Thereupon the Romans burst forth and seized the flesh of the victim, which Camillus offered up. The soldiers who guarded the walls were thus taken in the rear, the gates were thrown open, and the city soon filled with Romans. The booty was immense, and the few citizens who escaped the sword were sold as slaves. The image of Juno was carried to Rome, and installed with great pomp on Mount Aventine, where a temple was erected to her. Camillus entered Rome in a chariot drawn by four white horses. Rome had never yet seen so magnificent a triumph (B.C. 396). One circumstance, which occurred during the siege of Veii, deserves notice. As the Roman soldiers were obliged to pass the whole year under arms, in order to invest the city during the winter as well as the summer, they now, for the first time, received pay. Veii was a more beautiful city than Rome, and, as it was now without inhabitants, many of the Roman people wished to remove thither. At the persuasion of Camillus the project was abandoned; but the territory of Veii was divided among the Plebeians.