Holy feces batperson ... that's only about four years before I was born
I remember taking a cruise on the PS Medway Queen ... she used to run day cruises and I hopped on with my grandad at Southend pier. A wonderful ship. She made 7 trips to Dunkirk, and there was a commemorative plaque detailing her exploits.
It might not have been a victory, but after the collapse of the French Army, it sure must have seemed like one. It also might arguably be one of the major turning points of the war. If the British field army had not been evacuated, the Cabinet might have reconsidered its decision to stay in the fight. Game over.