Why were the events at Dunkirk memorable in military history?

The events at Dunkirk in 1940 are memorable in military history primarily due to the dramatic evacuation of Allied troops surrounded by German forces during World War II. Approximately 338,000 soldiers were rescued from the beaches over nine days, showcasing extraordinary bravery and resourcefulness from both military personnel and civilian volunteers. This operation, known as Operation Dynamo, was a significant morale booster for the Allies despite being a tactical retreat. It underscored the resilience of Allied forces and highlighted the importance of air and naval power in modern warfare.