 In 153 BC, the praetor "Quintus Fabius Nobilitor" arrived in Hispania with a force of nearly 30,000 men.The people of Segeda, whose wall had not been completed, fled and sought refuge among the Arevaci (another Celtiberian tribe), who welcomed them.An ambush in a thick forest with 20,000 infantry and 500 cavalry was prepared.