Seaport on the N coast of France, in Nord departement, on the Strait of Dover; population (1983) 83,760, conurbation 196,000. Its harbour is one of the foremost in France, and it has widespread canal links with the rest of France and Belgium; ferry service to Ramsgate, England. Industries include oil refining, fishing, and the manufacture of textiles, machinery, and soap. It was close to the front line during much of World War I, and in World War II, 337,131 Allied troops (including about 110,000 French) were evacuated from the beaches as German forces approached.