Castulo is now modern-day Linares located in the province of Jaén. Castulo played a large part of the Roman conquest of Spain. It was here in 213 BC that the Carthaginian commander, Hasdrubal Barca, decimated Roman soldiers with his army of 40,000. In a turn of events however, through the pressure of the Roman general Scipio Africanus, the people of Castulo betrayed the Carthaginians and became a Roman occupied territory.