Some of Republican Rome's leading deities were acquired through military actions. In the earliest years of the Republic, Camillus promised Veii's goddess Juno a temple in Rome as incentive for her desertion "(evocatio)". He conquered the city in her name, brought her cult statue to Rome "with miraculous ease" and dedicated a temple to her on the Aventine Hill. The first known temple to Venus was built to fulfil a vow made by Q. Fabius Gurges during battle against the Samnites. Following Rome's disastrous defeat by Carthage in the Battle of Lake Trasimene (217), Rome laid siege to Eryx, a Sicillian ally of Carthage. The city's patron deity, whom the Romans recognised as a warlike version of Venus, was "persuaded" to change her allegiance and was rewarded with a magnificent temple on the Capitoline Hill, as one of Rome's twelve Dii consentes. "Venus Victrix" was thought to grant her favourites a relatively easy victory, worthy of an ovation and myrtle crown.