Originally named Gesoriacum and probably also to be identified with Portus Itius, by the 4th century Boulogne was known to the Romansas Bononia and served as the major port connecting the rest of the empire to Britain. The emperor Claudius used this town as his base for the Roman invasion of Britain, in AD 43, and until 296 it was the base of the Classis Britannica.Zosimus called the city "germanorum", Germanic speaking, at the end of the 4th century.The city was an important town of the Morini.
Middle Ages
In the Middle Ages it was the centre of a namesake county. The area was fought over by the French and the English and Boulogne was occupied by the English from 1544 to 1550. In 1550, The Peace of Boulogne ended the war of England with Scotland and France. France bought back Boulogne for 400,000 crowns.
On 22 May 1940 during the Battle of France, two British Guards battalions and some pioneers attempted to defend Bolougne against an attack by the German 2nd Panzer Division. Despite fierce fighting, the British were overwhelmed and the survivors were evacuated by Royal Navy destroyers while under direct German gunfire.On June 15, 1944, 297 planes (155 Avro Lancasters, 130 Handley Page Halifaxes, and 12 De Havilland Mosquitos) of the Royal Air Force bombed Boulogne harbour to suppress German naval activity following D-Day. Some of the Lancasters carried Tallboy bombs, and as a result, the