The evacuation was ordered on the 26 May 1940
1940
The Siege of Calais and the evacuation of British and French troops at Dunkirk, France.
Dunkirk
Dunkirk .
the sea evacuation at Dunkirk, France, 1940
Codenamed Operation Dynamo by the British, the Dunkirk evacuation took place between May 26 and June 4, 1940,
Dunkirk
The Evacuation of British & subsequently French & Belgian soldiers from the beaches at Dunkirk in June 1940. 338 000 were returned to Britain.
The evacuation of 338.000 allied (mainly British) troops from the beaches after having been driven back by the advancing German army.
The Battle of Dunkirk lasted from May 26, 1940 to June 4, 1940, covering a span of about 10 days. It was the evacuation of forces from France, primarily British and French forces.
If you are referring to the evacuation from Dunkirk in 1940, the total number was around 338,000.