With the British Expeditionary Force pinned against the English Channel, Vice-Admiral Bertram Ramsay launched Operation Dynamo from a headquarters carved into Dover's chalk cliffs. Over nine days, nearly 800 vessels—including hundreds of civilian 'little ships'—ferried soldiers off the beaches under constant Luftwaffe bombardment, turning a military catastrophe into a defiant national legend.
The retreat had begun days earlier, but May 26, 1940 marked the moment Britain's War Cabinet formally ordered the evacuation, codenamed Dynamo after the room in Dover Castle where it was planned—a chamber that once housed a dynamo generator. Vice-Admiral Bertram Ramsay expected to save perhaps 45,000 men before German forces overran the perimeter.
Instead, an extraordinary improvisation unfolded. The Royal Navy commandeered everything that could float: Thames pleasure steamers, Dutch schuits, Isle of Wight ferries, and hundreds of privately owned yachts and fishing smacks, whose civilian owners often sailed them into the chaos themselves. Soldiers waded shoulder-deep into the surf, queuing under strafing runs, while the harbor mole at Dunkirk became a fragile pier for destroyers loading thousands at a time.
By the time Dynamo ended on June 4, 338,226 British and French troops had reached England—vastly more than anyone dared hope. Winston Churchill warned the House of Commons not to call it a triumph, calling it 'a colossal military disaster,' yet the rescue galvanized British resolve and supplied the seasoned soldiers who would defend the island in the years ahead.
Key people: Bertram Ramsay, Winston Churchill, Lord Gort