The commune of Cannae is situated near the river Ofanto (ancient names Aufdius or Canna), on a hill on the right (i.e., south) bank, 9.6 kilometres (6 miles) southwest of its mouth, and 9 km southwest of Barletta.It is primarily known for the Battle of Cannae, in which the numerically superior Roman army suffered a disastrous defeat by Hannibal in 216 BC.[1] In later times the place became a municipium, and the remains of an unimportant Roman town still exist upon the hill known as Monte di Canne.The Byzantine catapan, Basilios Bojoannes, successfully drove off the invading Lombard and Norman army.[2] The town was wrecked in 1083 by Robert Guiscard, who left only the cathedral and bishop's residence,[3] and was ultimately destroyed in 1276.