World War Two. Dunkirk, France. 1940. British Expeditionary Force soldiers board a rescue sea craft which will transport them to Dunkirk to evacuate endangered Allied forces, who were trapped on the Dunkirk beach. [Getty Images]

World War Two, Dunkirk, France, 1940, British Expeditionary Force soldiers board a rescue sea craft which will transport them to Dunkirk to evacuate endangered Allied forces, who were trapped on the Dunkirk beach. (Photo by Popperfoto via Getty Images/Getty Images) — see more

World War Two, Dunkirk, France, 1940, British Expeditionary Force soldiers board a rescue sea craft which will transport them to Dunkirk to evacuate endangered Allied forces, who were trapped on the Dunkirk beach. (Photo by Popperfoto via Getty Images/Getty Images)