All eyes will inevitably be on the Queen, who provided the permanent image of the duke's socially-distanced funeral pyre, seated herself beside his flag-draped coffin.
There will be a Thanksgiving service on Tuesday, nearly a year after the death of Queen Elizabeth II's late husband, Prince Philip, and the funeral under coronavirus restrictions.
Philip, who was married to the Queen for 73 years, died on April 9 last year at the age of 99 after a month-long hospital stay with a heart complaint.
Royal officials said the service at Westminster Abbey in central London would "thank the Duke of Edinburgh for his dedication to family, the nation and the Commonwealth".
The sight of senior royals and their foreign counterparts, British and foreign dignitaries and enthusiastic military bands would give the impression of a return to business as usual.
But it has been an eventful 12 months in the annals of the royal family, with ill health, scandal and division, as well as a growing sense of the end of an era.
All eyes will inevitably be on the Queen, who provided the permanent image of the duke's socially-distanced funeral pyre, seated herself beside his flag-draped coffin.
Her name was printed on Tuesday's official service order, as it was for the Commonwealth Day service earlier this month when she was scheduled to appear.
But the 95-year-old monarch, who is in his record-breaking 70th year on the throne, dropped out at the last minute.
The Queen, who turns 96 next month, has rarely been seen in public since spending an unscheduled night in hospital in October last year.
On medical advice, she has canceled several high-profile engagements, and recently complained of mobility issues that made it difficult to stand and walk.
She has been seen using a walking stick, and is reportedly using a wheelchair – and even a golf buggy – behind the stately walls of her sprawling Windsor Castle home.
There is also speculation that she may soon spend more time at her Balmoral estate in Scotland, after claims that a staircase has been installed.