The ports are important commercial facilities, reinforcing connections between the British and European road systems. They are also vulnerable to
industrial action such as strikes by port employees or
blockades by disgruntled fishermen. Their importance as military facilities was demonstrated during two World Wars.
World War I During
World War I the British and French Channel ports were major conduits for British
materiel and troops. The Belgian ports of Ostend and Zeebrugge were considered a major threat by British Admiral
Admiral Jellicoe. He was concerned by their use not only as German U-boat ports, but also as torpedo boat bases and even possible departure points for a cross-Channel attack. This concern was transmitted via Whitehall to the British chief of staff on the Western Front,
General Haig, for whom it merely confirmed the need for an offensive in
Flanders, and eventually led to the
Battle of Passchendaele (also known as the Third Battle of Ypres).
World War II During World War II, likewise, the Channel ports provided major supply routes which had to be reopened in 1944.
Dunkirk was the route from which British and Allied troops were
evacuated in 1940; see
Dunkirk evacuation.
Dunkirk was
left under siege until the general German surrender. In September 1944, the
First Canadian Army (Canadian, British, Polish, Czechoslovak and other national units) was to capture the ports from Le Havre to Zeebrugge.
Dieppe and Ostende were undefended but major military actions were required for
Le Havre (
Operation Astonia),
Boulogne (
Operation Wellhit) and
Calais (
Operation Undergo). It took several weeks to bring the ports back into use at a time when Allied armies badly needed supplies. ==See also==