For the first time in modern history, Royal Navy sailors uniforms will replace the more traditional bearskins as guards outside Buckingham Palace, St James’ Palace, Windsor Castle and The Tower of London.
Sailors and officers alike have been put through their paces with drill practice at HMS Excellent in Portsmouth, to get them ready to hold such prestigious office.
But look closely and you’ll see that the instructors, pace sticks in hand are from the Army - the 1st Battalion Coldstream Guards to be precise.
They were there to help the Senior Services’ own ceremonial team learn the intricate routines needed to mount the Queen’s Royal Guard.
The senior sailor leading all this when it happens for real is, Lt Commander Steve Elliott, who becomes Captain of the Queen's Guard.
“It’s a privilege and an honour, I’m very proud to lead my team and do those duties”.
All of the sailors and officers are volunteers, and the tally on their hats shows they come from across the service.
86 officers and ratings drawn from 45 ships and establishments are part of this, and, according to their Army instructors, training is going well.
In just a couple of weeks, they’ll be doing it for real in front of thousands of tourists, in the heart of London.