America drew up secret plans codenamed Operation Sandstone to invade Britain during the Cold War

America drew up secret plans to invade Britain during the Cold War because US generals feared the UK could be taken over by the Soviet Union

  • America drew up plans to invade Britain in case England became a part of the Soviet Union during the Cold War
  • US generals began preparing a counter-offensive if such an event occurred
  • After the end of WWII, British secret service bosses received a request for a topographical survey of UK’s coastline and beaches
  • Operation Sandstone was approved by the armed forces in August 1946 

America drew up plans to invade Britain during the Cold War in case England became part of the Soviet Union, documents reveal.

US generals feared the ‘Reds’ would themselves invade the UK and insisted the Admiralty help them prepare a counter-offensive.

In August 1946, British secret service bosses received a request from the US Chief of Naval Operations for a topographical survey of Britain’s coastline and beaches.

Fearing Soviet forces would soon be London, they said information about Britain’s beaches would be vital intelligence for America’s sea offensive.

America drew up  plans to invade Britain in case England became part of Soviet Union

US generals requested topographical surveys of Britain's coastline and beaches

US generals requested topographical surveys of Britain’s coastline and beaches

According to files found in the National Archives, the armed forces approved a comprehensive coastal survey codenamed Operation Sandstone in August 1946.

While not to be confused with the American’s 1948 nuclear weapon tests under the same name, Operation Sandstone intention was to gather information about onshore and seabed conditions, beach gradients and sea depth to enable the US Navy to land troops on our shores.

In 1951, the Chief of Combined Operations, Major-General Godfrey Wildman-Lushington, reported that Operation Sandstone was progressing. However, beach reconnaissance methods were ‘slow, costly and not applicable to areas to which we had no access’.

Nevertheless, the plan continued through the Cold War era into the mid-1960s. By this time, most of Britain’s coast had been surveyed and bucket and spade holidays were booming.

Every section of the coast was carefully mapped and photographed to see how obstacles might hamper US trucks, jeeps, and armour.

For example, surveyors working on the Norfolk Coast between Kings Lynn and Cromer, found a gravel beach laced with wooden piles to form groynes. 

They recorded in their notebooks: ‘Obstacles to wheeled vehicles and tanks – surmountable by personnel. Gradient 1:12 soft sand and gravel. See photo no. 4’

Every inch of the British coastline was also photographed from the air and each photo has to overlap with the following one to present a continuous sequence.

Although it ended up a colossal waste of money, the long lost files could now help scientists battling coastal erosion.

Surveyors working on the Norfolk Coast between Kings Lynn and Cromer, found a gravel beach laced with wooden piles to form groynes (pictured)

Surveyors working on the Norfolk Coast between Kings Lynn and Cromer, found a gravel beach laced with wooden piles to form groynes (pictured)

Files found in the National Archives showed that the armed forces approved a comprehensive coastal survey codenamed Operation Sandstone in August 1946

Files found in the National Archives showed that the armed forces approved a comprehensive coastal survey codenamed Operation Sandstone in August 1946

British coast was carefully mapped while notes were made using photographs of the shores

British coast was carefully mapped while notes were made using photographs of the shores

Dr Dan Gilfoyle, of the National Archives, said: ‘Operation Sandstone finished in 1966, but not before it had produced a rich photographic and descriptive record of the British coast. 

‘The survey was fortunately never required for its original purpose and its records remained in storage.’

Following an extensive conservation and cataloguing project at The National Archives, they have now been made available to the public.

Dr Gilfoyle added: ‘They might yet have an important role for environmental studies, as they give a comprehensive picture of the coast as it was in the 1950s. 

‘Assembled and presented digitally, they might provide an important marker for coastal change over the last sixty years.’