Charles, 71, who has recovered from coronavirus, and the Duchess of Cornwall, 72, will welcome French President Emmanuel Macron to the UK next Thursday.
The royal couple will travel from Scotland to London and the greeting will take place at Clarence House.
The meeting is being held to celebrate the 80th anniversary of General Charles de Gaulle’s appeal to the French population to resist the German occupation of France during the Second World War.
In his rallying call, which was broadcast on the BBC in June 1940, he said: “I call upon all Frenchmen who want to remain free to listen to my voice and follow me.”
Mr Macron is also visiting the capital to honour the city and the country by awarding London France’s highest decoration – Legion d’Honneur.
Charles and Camilla, who have been carrying out royal engagements remotely during the coronavirus pandemic, and are said to be “pleased” to be welcoming Mr Macron to the UK.
But the engagement is not expected to mark the return to regular public duties.
However a number of low-key events are also planned for next week.
Clarence House said in a statement: “The President of the French Republic will visit London on Thursday 18th June 2020 to celebrate the 80th Anniversary of General de Gaulle’s ‘Appel’ to the French population to resist the German occupation of France during WWII.
“On behalf of Her Majesty’s Government, Their Royal Highnesses The Prince of Wales and The Duchess of Cornwall will formally receive President Emmanuel Macron at Clarence House with a Guard of Honour found by Number 7 Company Coldstream Guards accompanied by the Band of the Coldstream Guards.”
A Clarence House spokeswoman added that social distancing rules would be followed.
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