Hanno, son of Bomilcar, was a Carthaginian officer in the Second Punic War, and nephew of Hannibal Barca, Carthage's leading general. Hanno's mother was one of Hannibal's three elder sisters. When Hannibal's army reached the Western bank of the Rhône River they began preparations to cross. A group of Gauls gathered on the Eastern bank, intent on preventing the army from crossing. Hanno led a small group north to cross. The group crossed in small rafts they built. Once across they headed south toward the Gauls. Hanno sent a smoke signal to inform Hannibal that Hanno's force was ready. Hannibal began to send his cavalry across in canoes. As the cavalry attained a foothold on the Eastern bank, the Gauls approached, ready to fight. At this point Hanno's force attacked the Gauls' rear causing e