Forino is a town and comune

Comune

In Italy, the comune is the basic administrative division, and may be properly approximated in casual speech by the English word township or municipality.-Importance and function:...

in the province of Avellino

Province of Avellino

The Province of Avellino is a province in the Campania region of Italy. The area is typified by many small towns and villages scattered across the province; in fact only two towns have a population over 20,000; its capital city Avellino and Ariano Irpino....

, Campania

Campania

Campania is a region in southern Italy. The region has a population of around 5.8 million people, making it the second-most-populous region of Italy; its total area of 13,590 km² makes it the most densely populated region in the country...

, Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

.

Battle

On 8 May 663 AD the town was the scene of a battle between the Byzantine army of Constans II and the Lombard

Lombards

The Lombards , also referred to as Longobards, were a Germanic tribe of Scandinavian origin, who from 568 to 774 ruled a Kingdom in Italy...

 army of Romuald I of Benevento

Romuald I of Benevento

Romuald I , duke of Benevento was the son of Grimoald, king of the Lombards. He received Benevento when his father usurped the throne in 662. Grimoald sent the deposed king Perctarit's wife Rodelinde and son Cunincpert to the court of his son in Benevento.Romuald betrothed his sister Gisa to...

, son of Grimoald I

Grimoald I of Benevento

Grimoald I was duke of Benevento and king of the Lombards .Born probably before 610 to Duke Gisulf II of Friuli and the Bavarian princess Ramhilde, daughter of Duke Garibald I of Bavaria, he succeeded his brother Radoald as duke of Benevento...

 and duke of Benevento

Benevento

Benevento is a town and comune of Campania, Italy, capital of the province of Benevento, 50 km northeast of Naples. It is situated on a hill 130 m above sea-level at the confluence of the Calore Irpino and Sabato...

.
According to legend, St. Michael made an apparition in this battle on the side of the Lombards.
After this crushing defeat Constans retired to Naples

Naples

Naples is a city in Southern Italy, situated on the country's west coast by the Gulf of Naples. Lying between two notable volcanic regions, Mount Vesuvius and the Phlegraean Fields, it is the capital of the region of Campania and of the province of Naples...

 and gave up his attempts to expel the Lombards from south Italy.

Other sources tells us the battle took place at Calore River

Calore River

The Calore Irpino or Calore Beneventano or Calore River is a river in southwestern Italy. It rises from the Monte Cervialto in the Monti Picentini sub-range of the Apennine Mountains. The river flows first in the province of Avellino, and then in that of Benevento, before flowing into the Volturno...

, where it joins with the river Volturno

Volturno

The Volturno is a river in south-central Italy.-Geography:It rises in the Abruzzese central Apennines of Samnium near Rocchetta a Volturno and flows southeast as far as its junction with the Calore River near Caiazzo and runs south as far as Venafro, and then turns southwest, past Capua, to...

.