To mark the 75th anniversary of D-Day, six Second World War concrete structures built as replica landing craft for training, nine sunken army tanks, two armoured bulldozers and components of Mulberry floating harbours in Dorset, Devon and West Sussex are being granted protection by the Department for Digital, Culture, Media and Sport on the advice of Historic England.

D-Day on 6th June 1944, codenamed Operation Overlord, was the greatest combined land air and naval operation in history. It was a massive assault by the allies to invade Nazi-occupied Western Europe during the Second World War. 156,000 soldiers from Britain, America, Canada and France landed on the beaches of Normandy together with thousands of vehicles and supplies.

The many rehearsals and training exercises carried out along the coastline of Devon and Dorset together with the great engineering achievements of the Mulberry Harbours contributed to the success of the D-Day landings.

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Valentine Tank Assemblage, Studland Beach, Poole Bay, Dorset (Scheduled Monument)

Six weeks before D-Day in April 1944, troops arrived at Studland Beach in Dorset to rehearse an assault codenamed ‘Exercise Smash’. This was watched by Prime Minister Winston Churchill, King George VI and Supreme Allied Commander General Dwight D. Eisenhower from Fort Henry, an observation post built on a small cliff overlooking the bay.

Seven army tanks known as Duplex Drive (DD) Valentine tanks were lost during this exercise which went badly wrong. The Valentine was modified to be a ‘floating’ or amphibious tank that could leave its landing ship further out from shore than other tanks. However, during the exercise, these tanks sank with the loss of six crewmen shortly after driving off their landing craft. They ran into immediate difficulty when a sudden change in the weather adversely affected sea conditions.

A valuable lesson was learned that these tanks couldn’t survive being launched too far from a beach and consequently on D-Day itself the tanks were released in shallow water. The Valentine tanks in Poole Bay represent the largest surviving group of their type anywhere in the world.

Second World War Tanks & Bulldozers, Selsey Bill, West Sussex (Scheduled Monument)

In June 1944, the Allies opened a second front in Europe with Operation Neptune, comprising a largely amphibious invasion.

In preparation for the assault, the 286-ton landing craft LCT(A)2428 was loaded with two Centaur cruiser tanks designed to fire at concrete targets such as pillboxes, two armoured D7 bulldozers designed to protect both the driver and the engine while clearing the invasion beaches of obstacles, one 4X4 car and a jeep.

All the vehicles were lost on the night of 5/6 June when the landing craft broke down in the Solent while on route to the D-Day landings in Normandy. The vessel was taken under tow but capsized, spilling into the sea its cargo of tanks and armoured bulldozers intended to support the 3rd Canadian Infantry Division landing at Juno Beach.

Sometime afterwards, the upturned vessel was deliberately sunk by gunfire from its tug, several miles to the east, off Selsey Bill in West Sussex. These armoured vehicles represent the only surviving group of their type in north-west Europe.

Phoenix Caisson (Outer) off Pagham Harbour, West Sussex (Scheduled Monument)

Mulberry Harbours were considered to be a major technological and engineering achievement of their time and contributed to the success of the D-Day landings. Designed and constructed by British military engineers during the Second World War, these huge artificial floating harbours were used by the allies to rapidly land enormous amounts of supplies and equipment in Normandy following the invasion.

The component parts were towed by tugs across the Channel, assembled by the military then sunk off Normandy to form a sheltered harbour to protect unloading ships. The Mulberries consisted of four major component parts and each had a code-name: Gooseberry (a network of artificial breakwaters), Bombardon (floating breakwaters), Whale (floating piers) and Phoenix (sunken breakwaters).

The outer or far Mulberry off Pagham Harbour which has been protected is a Phoenix caisson and it is a rare type of steel reinforced concrete unit that functioned as a sunken breakwater. Phoenix units varied in size between 2000 and 6000 tons. In June 1944 this particular unit was ‘parked’ off Pagham awaiting passage to Normandy. Its ballast tanks were pumped out to re-float it but as its tug wasn’t ready, the unit was re-sunk. However, during stormy weather, it swung around in the tide and became so damaged that it became unusable. It has remained in situ ever since.

Phoenix Caisson (Inner) off Pagham Harbour, West Sussex (Scheduled Monument)

A rare concrete pier off Pagham has also been granted protection. Part of the Mulberry Harbour, this comprises a steel reinforced concrete platform which was designed to connect to offshore pontoons allowing more than one ship to unload its cargo at any one time.

It is not yet clear how this sunken pier came to be located in the shallow waters off Pagham, but it is in an area commonly known by mariners as the ‘park’ which contains a large number of submerged or ‘parked’ Second World War components that were associated with Mulberry Harbour operations.

Second World War Concrete Replica Landing Craft and Training Area, Braunton Burrows, Devon (Listed Grade II)

Six Second World War replica landing craft installations made of concrete and used for training American troops at Braunton Burrows in Devon have been protected.

From September 1943, the North Devon coast became an Assault Training Center for American forces as part of the preparations for an allied attack on the Normandy beaches. Concrete replica landing craft were based on a 1942 American modification of the British Tank Landing Craft and were designed to represent the top deck of the craft with its front ramp lowered so troops could practise the embarking and disembarking of vehicles and personnel in advance of the D-Day landings. Additional aprons were added at the back of the craft and six foot high metal poles at the base edges supported either canvas or corrugated-tin screens to represent the sides of the craft.

The training structures were abandoned and a large number demolished in the late 20th century. A memorial service is held on 6 June each year at the replica craft structures at Braunton Burrows to recognise and remember the important role that the members of the allied forces played in the liberation of Europe.

A further concrete structure newly listed at Grade II at the Assault Training Center, to the north of the landing craft, illustrates the range of facilities offered here. The practice rocket, or ‘Bazooka’, wall was built deep within the sand dunes in 1943, as a target butt for the Allied forces. A rare survival of its type, the wall is largely intact and the visible repairs provide evidence of its use.

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