Siege of Calais and Battle of Boulogne, May 1940

The siege of Calais of 23-26 May 1940 saw some of the most desperate fighting during the German campaign in the west in 1940. A combined French and British force was able to hold off heavy German attacks for three critical days, allowing the Allies to consolidate their hold on Dunkirk, but at the cost of the virtual destruction of the garrison.
The battle of Boulogne of 22-25 May 1940 saw a British and French garrison hold off a determined German attack, before the British were evacuated by sea.