Nero immediately ordered the reserve in the capital to proceed to Narnia as the point selected for the junction of the two Phoenician armies, while the division stationed at Capua went to the capital, and a new reserve was formed there.

Convinced that Hannibal was not acquainted with the purpose of his brother and would continue to await him in Apulia, Nero resolved on the bold experiment of hastening northward by forced marches with a small but select corps of 7000 men and, if possible, in connection with his colleague, compelling Hasdrubal to fight.

He was able to do so, for the Roman army which he left behind still continued strong enough either to hold its ground against Hannibal if he should attack it, or to accompany him and to arrive simultaneously with him at the decisive scene of action, should he depart.
Battle of Sena Death of Hasdrubal Nero found his colleague Marcus Livius at Sena Gallica awaiting the enemy.

Both consuls at once marched against Hasdrubal, whom they found occupied in crossing the Metaurus.

Hasdrubal wished to avoid a battle and to escape from the Romans by a flank movement, but his guides left him in the lurch; he lost his way on the ground strange to him, and was at length attacked on the march by the Roman cavalry and detained until the Roman infantry arrived and a battle became inevitable.