High Quality Content by WIKIPEDIA articles! The Battle of Rhone Crossing took place during the Second Punic War. The Carthaginian army under Hannibal Barca, while marching to Italy in the autumn of 218 BC, fought an army of the Gaulish tribe of Volcae on the east bank of the Rhone River possibly near Aurasio. The pro-Roman Volcae, acting on behalf of a Roman army camped on the east bank near Marseille, intended to prevent the Carthaginians from crossing and invading Italy. Devising a plan to circumvent the Volcae, the Carthaginians, before crossing the river to attack the Gauls, had sent a detachment upriver under Hanno, son of Bomilcar, to cross at a different point and take position behind the Gauls. Hannibal led the main army across after Hanno sent smoke signals saying that the ambush was in place. As the Gauls massed to oppose Hannibal s force, Hanno attacked them from behind and routed their army. Although the battle was not fought against a Roman army, the main protagonist of the Punic Wars, the result of the battle had a profound effect on the war.