Prince Philip was scheduled to attend the commemorations alongside other members of the Royal Family, including Princess Anne, on May 31.
The Queen’s husband was last seen in public last Thursday during the ceremony of Beating Retreat.
He is said to be disappointed that he is unable to attend the commemorations.
A timeline of the Duke’s health
Back in December 2011, the Duke was treated at Papworth Hospital, near Cambridge, after undergoing heart surgery to have a stent fitted.
He was kept there over Christmas until he was discharged five days later to rejoin the Queen at the Sandringham Estate.
The more recent health scare was in 2012, where he was admitted to the King Edward VII Hospital in London for several days after a bladder infection. This occurred at the time of Her Majesty’s Diamond Jubilee, and as a result, he missed part of the celebrations.
He was released just in time to celebrate his 91st birthday with his family.
