In the early 6th century BC, during the reign of Rome's fifth king
Lucius Tarquinius Priscus, the Sabines attacked Rome. Tarquinius had been preparing to construct a stone wall around Rome, however, the Sabines, having already crossed the
Anio river, forced the king to abandon his plans and prepare for the attack. Livy reports that the initial engagement, though bloody, did not result in success for either side. The Sabines withdrew to their camp, allowing the Romans time to levy additional troops. Tarquinius, believing Rome's military weakness lay in its lack of horsemen, doubled the number of the
equites. Tarquinius was determined to press his victory. He firstly piled up and burnt the spoils he had vowed to
Vulcan, and he sent back to Rome the prisoners and booty he had captured. He then proceeded, with his army, into the Sabine territory. The Sabines hastily raised a fresh army, but were defeated again. They then sued for peace. According to the
Fasti Triumphales, the date of the triumph was 13 September, 585 BC. ==War with Tarquinius Superbus==