According to RCI:
Members of the Ceremonial Guard and dignitaries of the Royal 22e Régiment are to stand guard at Buckingham Palace, St. James’ Palace and the Tower of London on 14, 16 and 18th of July.
The Quebec-based R22R…and are Canada’s only completely Francophone regiment.
It was also a first for the King’s Guard Sentinels outside Buckingham, and St James to receive commands, not only from a non-British unit, but also in French
Raised in October of 1914, at the beginning of the Great War, the R22R is celebrating their centennial this year.