On the English channel between Calais and Normandy, the fishing village of Boulogne-sur-Mer has an anniversary today (July 19) from 1544, when Henry VIII besieged it in person.
Henry had entered a brief pact with the Holy Roman Emperor Charles V against the French, and his English forces in Calais headed over to Boulogne and quickly took the town over, but the French in the castle held out until mid-September when English tunnel diggers undermined their position.
When Charles V subsequently entered into a peace deal with France, and the English were busy with rebels closer by, the area there on the channel coast became a bit of a quagmire -- the French couldn't push the English out completely, but the English couldn't really keep a secure foothold.
Nowadays the area is good for fishing herring (aka kippers) and tourists.
https://en.wikipedia.org/wiki/Sieges_of_Boulogne_(1544–46)