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This is the true story of the pier master at Dunkirk

Chritsopher Nolan's new "Dunkirk" movie features Sir Kenneth Branagh as the cool-under-fire Commander Bolton, but his character is largely based on a real British officer who underwent greater hardships to save British and French forces and was tragically lost at sea during the evacuation.


Operation Dynamo, as the evacuation of Dunkirk was known, was a desperate play by the British to salvage as much of their expeditionary force as they could after Hitler's war machine tore through allied forces and nations in Europe faster than nearly anyone anticipated.

The German blitzkrieg took many by surprise. Here, the Fort Eben-Emael in Belgium, thought to be one of the world's best fortresses and practically impregnable, sits occupied after a single morning of fighting thanks to a daring German paratrooper attack on May 10, 1940. (Photo: Public Domain)

The original goal was to get 45,000 men out in two days before the defensive line at Dunkirk, the last Allied-held territory in the area, collapsed. A Canadian member of the Royal Navy, Cmdr. James Campbell Clouston, was assigned to getting as many men as possible off the "East Mole."

The East Mole was actually one of two breakwaters used to protect the beach and channel from ocean currents. It was about a mile long and just wide enough for four men. It was a clear target for German planes to attack and provided little opportunity for cover. But, it was an efficient way to get large numbers of men off.

British troops board the destroyer HMS Vanquisher during low tide by using scaling ladders to climb down from the Mole (at left). (Photo: Imperial War Museum)

Clouston quickly got the Mole operating as the top method of evacuating troops. He ordered evacuating troops to move in groups of 50 to cut down on the chaos on the span and positioned as many ships as possible along the length for simultaneous boarding.

On the first day that Clouston and other members of a commanding party under Capt. William Tennant were operating on the beach, the number of troops evacuated rose from 7,669 to 18,527. Many of these men made it out thanks to Clouston's efforts on the Mole, which was averaging 1,000 evacuations per hour.

But German air raids targeting the Mole began to take real effect. The third of three air raids on May 29, 1940, three ships were lost including the destroyer HMS Grenade, which had been providing defensive support of the operation as well as embarking evacuating troops.

170802-DLN-The Royal Navy's HMS_Grenade_(H86) which was later sunk by a dive bomber while evacuating troops at Dunkirk. (Photo: Imperial War Museum)

Panic broke out on the Mole after a bomb blew a hole in a section. Troops attempted to rush off, but Clouston ordered a lieutenant to draw his revolver and restore order. The troops on the Mole were quickly corralled onto a trawler and sent away.

A panicked junior officer drove to a resort northeast of Dunkirk and called an officer in England to erroneously report that the harbor was blocked by one of the sunken ships. Evacuations slowed as most vessels headed to other places instead the East Mole.

But word got out that the Moles were still in operation, and the pace picked up. One of the best days for the Mole came on June 1 when, despite a devastating air raid, over 47,000 men made it onto ships from the pier.

The Mole as depicted in Christopher Nolan's "Dunkirk." (YouTube screengrab/Warner Bros. Pictures)

That night, six days into what was supposed to be a 48-hour operation, Clouston was recalled to Dover to take part in a planning meeting for a massive lift on June 2. After the meeting ended, Clouston was headed back to Dunkirk in the pre-dawn hours in a small motorboat when he was attacked by German bombers. His boat quickly sank.

Clouston waved off the assistance of a second boat. Survivors said that he was worried the Germans would spot it and attack while the boat was stationary. He attempted to swim to another vessel a couple of miles away but was lost at sea.

In the end, a total 338,226 men were evacuated through June 4. Almost 240,000 of them made it off from the harbor and the Mole.