It comes after the Princess Royal received a new military title last week, announced by King Charles and Buckingham Palace.
Anne was made Deputy Colonel-in-Chief of the Royal Regiment of Scotland, in recognition of “Her Royal HIghness’s strong links to Scotland”.
Several other royals, including King Charles, Queen Camilla, Prince William, Prince Edward, Sophie, the Duchess of Edinburgh, Prince Richard and Birgitte, the Duchess of Gloucester were also given new appointments.
A statement from the palace read, “Following His Majesty’s Accession, The King is pleased to announce further military appointments for working Members of the Royal Family.
“The new appointments will continue to reflect the close relationship between the Armed Forces and the Royal Family in His Majesty’s reign.”
Anne had a very special assignment on Charles coronation day - following the crowning, she acted as Gold-Stick-in-Waiting for the parade back to the palace and was the only royal to ride on horseback instead of travel in a carriage.
Riding behind the King and Queen in the Gold State Coach, Anne led 6000 armed services personnel back to Buckingham Palace - an honour that reflected her close bond with Charles, according to her daughter Zara Tindall.
“It’s a busy time for them all, and her and her brother are very close, so it’s a nice thing to do,” she told People ahead of coronation day.
Anne has held the Gold Stick position since 1998. The role goes back to the 15th century when two officers, a Gold and a Silver Stick, stayed close to the monarch to keep them safe. Anne’s procession on horseback was fitting for the former Olympic rider.
She told CBC News, “I have a role as the Colonel of the Blues and Royals in the Household Cavalry regiment as Gold Stick [in Waiting]. And Gold Stick was the original close protection officer. So that is a role I was asked if I’d like to do for this coronation, so I said yes.
“Not least of all, it solves my dress problem.”