The battle of Cannae was as famous as the defeat at the Allia, but because of the enemy's inaction the outcome was less serious (Livy, History of Rome (Ab Urbe Condita) 22.50)
After Hannibal forced the small camp to surrender, the wounded and the frightened in the large camp also handed over their camp to the enemy on the same terms (Livy, History of Rome (Ab Urbe Condita) 22.52)
Right after the victory at Cannae and the plundering of the Roman camp, Hannibal leaves Apulia and moves to Samnium (Livy, History of Rome (Ab Urbe Condita) 23.1)
At Capua the pro-Roman Decius Magius is denounced as no friend of Carthage and unworthy of the name of Campanian (Livy, History of Rome (Ab Urbe Condita) 23.10)
As the Roman praetor approaches, Hannibal is alarmed, leaves the territory, and goes down to the coast near Neapolis (Livy, History of Rome (Ab Urbe Condita) 23.15)