What event is remembered as the evacuation of 300,000 people from the beaches during World War II?

The Dunkirk evacuation, also known as Operation Dynamo, was a pivotal moment in World War II. In May and June of 1940, hundreds of thousands of Allied soldiers were trapped on the beaches of Dunkirk, France, facing imminent capture by the advancing German forces. The British government, along with civilian volunteers, organized a massive rescue effort using a fleet of all kinds of boats – naval vessels, merchant ships, and even small pleasure crafts. This extraordinary operation managed to evacuate over 300,000 soldiers back to Britain. The "Dunkirk spirit" refers to the resilience, courage, and unity displayed during this desperate situation. It symbolizes the willingness of ordinary people to come together and help in times of crisis. While the Blitz spirit refers to the resilience of the British people during the bombing raids on British cities, and D-Day was the allied invasion of Normandy, and the Battle of Britain was the air campaign fought over Britain, only Dunkirk involved the large-scale evacuation from beaches that the question describes.