The iconic Changing of the Guard at Buckingham Palace received a surprising update today.
For the first time, it was sailors instead of soldiers who gathered to protect the royal residence.
Eight-six sailors from 45 ships and naval bases spent a month learning the intricate routines that make up the ceremony.
The traditional ceremony dates back to 1660, with very little changing in the hundreds of years, although today was more about pageantry than real protection.
The guardsmen weren't the only thing to change, with surprisingly modern music making its way into proceedings - the Game of Thrones theme being a particularly apt choice, considering the locale.
Changing the guard is usually the duty of the army's household division, but this special ceremony was held to mark the end of the 'Year of the Navy'.