While leading the nation during Remembrance Sunday commemorations, King Charles proudly wore military uniform.
His Majesty wore the great coat of a No.1 Field Marshal for the service while heir to the throne Prince William was in RAF uniform.
And eagle-eyed viewers watching the service from the Cenotaph yesterday spotted that both uniforms featured the late Queen's cypher on the shoulders.
In fact, many of the military personnel on Whitehall also continued to wear the former monarch's cypher.
This is despite Charles now having his own cypher that was released in the weeks following the death of the Queen and his accession to the throne.
However, according to The Telegraph, the changeover of cyphers will be a gradual one that will be introduced over time.
The publication adds that the changeover will happen when existing supplies of buttons and insignia run out and uniform will still carry the ER initials until it needs replacing.
It also reports that this means many uniforms will still have the cypher on Remembrance Sunday next year - and possibly for the years to come.
At yesterday's Remembrance event in Central London, Charles appeared to hold back the tears during his emotional first Remembrance Sunday service as monarch.
He honoured the nation’s war dead for the first time since the death of his mother the Queen and laid a wreath at the Cenotaph in remembrance of all those who have made the ultimate sacrifice during conflict.
Charles had performed the role on behalf of the Queen as the Prince of Wales, but as the first chimes of Big Ben rang out at 11am and a two-minute silence began, he stood before the Cenotaph in his role as head of state for the first time.
He then laid his wreath, its design a tribute to ones used by his late mother and grandfather George VI and it featured his racing colours, after buglers from the Royal Marines played the Last Post.
Prince William also lay the same wreath previously laid by his father, who held the title Prince of Wales for more than 64 years before his accession to the throne. It featured the white Prince of Wales feathers but had a new ribbon in “Welsh red”.
Meanwhile, a teary-eyed Princess of Wales and Queen Consort Camilla watched the emotional Remembrance Sunday service together.
The two royal women stood on the balcony of the Foreign Office, overlooking the Cenotaph, where wreaths were laid to honour the nation's war dead.
