Germany invades France and the Low Countries, initiating the Battle of France during World War II.
The British start the large-scale evacuation of Allied soldiers trapped on the beaches of Dunkirk, France, known as Operation Dynamo.
Over 330,000 Allied soldiers are evacuated from Dunkirk using naval vessels and civilian boats during the nine-day operation.
Operation Dynamo ends with the successful rescue of hundreds of thousands of troops, though much equipment was left behind.