By 3 June 1940, instead of the 45,000 originally hoped for, 328,000 Allied troops had been taken off the Dunkirk beaches and shipped back to England. This was partly due to the efforts of the Royal Navy and hundreds of civilian ships that had crossed the Channel. It was also due to dogged rearguard actions at Boulogne, Calais and elsewhere, which bought time. The BEF also benefited from Hitler's order on 24 May that his tanks should halt at a time when the German 1st Panzer Division was only…
THE BRITISH ARMY IN THE UK: EVACUATION FROM DUNKIRK, MAY-JUNE 1940 part of "WAR OFFICE SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Puttnam (Mr) and Malindine (Mr) A wounded soldier on a stretcher is given a drink on the quayside at Dover, 31 May 1940.
Operation Dynamo. In May 1940 German armoured troops invaded France after crossing the Netherlands, Luxemburg and Belgium. The speed of their advance was like lightning. Allied soldiers were caught in a vice near Dunkirk.
It was dubbed the Miracle of Dunkirk. Between 27 May and the early hours of June 1940, allied soldiers from the beaches of Dunkirk were evacuated. Classic newsreel: http://www.britishpathe.com/video/evacuation-of-the-bef
During the opening weeks of Hitler's war on the Western Front, thousands of soldiers of the British Expeditionary Force and the French First Army, with their backs to the sea, were evacuated from the beaches of Dunkirk in nine desperate days of fighting.