What saved may british and french forces from germans in 1940

Dunkirk is a small town on the coast of France that was the scene of a massive military campaign during World War II. From May 26 to June 4, 1940, some 338,000 British Expeditionary Force (BEF) and other Allied troops were evacuated from Dunkirk to England as German forces closed in on them. The massive operation, involving hundreds of naval and civilian vessels, became known as the “Miracle of Dunkirk” and served as a turning point for the Allied war effort.