The Celtiberian confederacy was a tribal federation formed around the mid-3rd century BC, by the Arevaci, Lusones, Belli and Titii, with the Arevacian city of Numantia as the federal capital. During the Second Punic War the confederacy kept itself neutral, though Celtiberian mercenaries are mentioned fighting for both sides on a number of occasions. The first Roman incursion into the Celtiberian heartland occurred around 195 BC under Consul Cato the Elder, who attacked unsuccessfully the towns of Seguntia Celtiberorum and Numantia, where he allegedly delivered a speech to the numantines.