
D-Day and Operation Overlord
Half a year before D-Day took place, COPP men Logan Scott-Bowden and Bruce Ogden Smith swam ashore onto first Gold beach and then Omaha beach (twice) to probe the enemy defences and take soil samples.
Then on D-Day itself, COPP used two X-craft midget submarines to act as light beacons, marking the way towards Juno Beach and Sword Beach for the assault force. Other COPP teams were in the first-wave of landing craft as they headed in, spearheading the liberation of Europe.
Find out about D-Day and Operation Overlord

Pioneering days
Find out about Pioneering days

COPP in the Mediterranean
Thrown into service too soon to carry out reconnaissance of Sicily, the first COPP teams in the Mediterranean suffered heavy losses.
But once training was properly established, COPP teams went on to serve with distinction during all the major landings on Sicily, at Salerno and at Anzio.
Teams also supported numerous small-scale amphibious in the Adriatic and the Aegean Sea.
Find out about COPP in the Mediterranean

Service in South-East Asia
Find out about Service in South-East Asia

Post-war
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.
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 he’d soon play a pivotal role in transforming the Royal Navy's planning for amphibious operations.
“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."
More to come
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More information to come.
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.
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)



