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COPP men and X-craft crew pose with Evelyn Cross, one of the COPP Wrens, at submarine base Fort Blockhouse in Gosport. The COPP men had been to have their photographs taken in civilian clothing in case they were needed for fake ID cards if forced ashore in occupied France. (Public domain)

​D-Day and Operation Overlord

COPP played a key role in the D-Day landings  not just on 6 June 1944 but in the months leading up to it.

X-23 on D-Day

While midget submarine X-20 marked Juno beach on D-Day, X-23 marked Sword beach.


COPPists Geoffrey Lyne and Jim Booth joined regular X-craft men George Honour, Jimmy Hodges and George Vause.


D-Day's postponement by 24 hours because of bad weather meant they had to sit on the bottom off Sword beach for an additional day.


The atmosphere inside an X-craft was repugnant at the best of times, but almost 24 hours without being able to ventilate made it even worse than usual.


Finally, after completing her beach marking role, X-23 was able to come alongside HQ ship HMS Largs.


​Pioneering days

In early 1941 the Allies were making plans to seize Rhodes, the island off the coast of Turkey that had been under Italian occupation since 1912. Liberating the island would help secure the Eastern Mediterranean, protecting approaches to the Suez Canal and to oil fields in modern-day Iraq.


But as planning progressed, the Royal Navy navigating officer responsible for getting the troops ashore started to get increasingly worried.

The visionary

Nigel Clogstoun-Willmott was born in India in 1910. After educating at Marlborough College, he commissioned into the Royal Navy as a Sub-Lieutenant in 1932.


He completed his training as a navigating officer in 1937 and joined the sloop HMS Wellington, serving in her in the South Pacific until the outbreak of war.


After steering Wellington home to the UK after war was declared, Clogstoun-Willmott transferred to destroyer HMS Faulknor. He served in her throughout the Norwegian campaign.


By late 1940 Clogstoun-Willmott was navigating officer in cruiser HMS Glasgow when it was badly damaged by an Italian torpedo-bomber while at anchor off Crete. Glasgow’s crew limped her back to Alexandria in Egypt where she entered dock for extensive repairs.


This is when Clogstoun-Willmott joined the Combined Operations staff in Cairo. Appointed to work with Rear Admiral Tom Baillie-Grohman, little did Clogstoun-Willmott know hed soon play a pivotal role in transforming the Royal Navy's planning for amphibious operations.

Nigel Clogstoun-Willmott photographed after the war when serving as a Captain in the Royal Navy. (Public domain)
Nigel Clogstoun-Willmott

“It seemed to me that it would be a disaster if we didn’t know where we were. And we wouldn’t have, because the charts [of the Rhodes coast] were wrong by at least a mile.

“They also didn’t know what the beaches were like. They might be rock shelves or they might be a false beach, with a bar on which the landing craft would debouch and out would come the tanks, then it would get deeper instead of shallower as they went in."

​COPP in the Mediterranean

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More to come

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​Service in South-East Asia

The first COPP teams to arrive in South-East Asia in late 1943 experienced frustration as their work seemed to be in vain: with Allied planners focusing on Europe and the Mediterranean, reconnaissance operations were followed by disappointment as the landings were cancelled.

 

It wasn’t until 1945 that COPP teams saw their dangerous work rewarded as they played a key role in the third Arakan campaign, supporting the Allied advance during a series of ‘chaung hopping’ landings that aimed to get behind Japanese lines. 

More information to come.

SBS men photographed during a training exercise. (Crown copyright)

​Post-war

Although COPP was disbanded at the end of the Second World War, the work it did was soon taken up by a new unit.

In South-East Asia, COPP was part of the Small Operations Group (SOG), whose second-in-command was legendary Royal Marines officer ‘Blondie’ Hasler. Hasler had earlier in the war conceived and led the Royal Marines’ famous Cockleshell Heroes raid on shipping in Bordeaux harbour.


SOG included a number of other canoe-using units besides COPP: the Army’s Special Boat Section, the Sea Reconnaissance Unit and the Royal Marines’ Detachment 385. 

At the end of the war, all these units were disbanded. The existence of special forces outside the ‘proper’ chain of command had been caused resentment among some senior officers in both the Army and the Navy throughout the war. Now it was felt there was no further need for them and they could safely be abolished.

But Hasler was allowed to retain a small number of staff from officers within SOG, including COPP’s Alex Hughes. After returning to the UK they set up the School of Amphibious Warfare to keep alive the ‘small boat’ skills and expertise that they had gained during the war.


Additional photo credits for this page: Adobe Stock, Australian War Memorial, Jack Crane family, McMaster University, National Archives and Records Administration (NARA)