WINDSOR, ENGLAND - OCTOBER 12: Prince Philip, Duke of Edinburgh attends the wedding of Princess Eugenie of York to Jack Brooksbank at St. George's Chapel on October 12, 2018 in Windsor, England. (Photo by Alastair Grant - WPA Pool/Getty Images)
WINDSOR, ENGLAND - OCTOBER 12: Prince Philip, Duke of Edinburgh attends the wedding of Princess Eugenie of York to Jack Brooksbank at St. George's Chapel on October 12, 2018 in Windsor, England. (Photo by (Photo by Mark Large - WPA Pool/Getty Images)
WINDSOR, UNITED KINGDOM - JULY 22: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Philip, Duke of Edinburgh (wearing the regimental tie of The Rifles) attends a ceremony to mark the transfer of the Colonel-in-Chief of The Rifles from him to Camilla, Duchess of Cornwall at Windsor Castle on July 22, 2020 in Windsor, England. The Duke of Edinburgh has been Colonel-in-Chief of The Rifles since its formation in 2007 and has served as Colonel-in-Chief of successive Regiments which now make up The Rifles since 1953. The Duchess of Cornwall was appointed Royal Colonel of 4th Battalion The Rifles in 2007. (Photo by Pool/Max Mumby/Getty Images)
