LONDON, ENGLAND - MARCH 09: Princess Anne, Princess Royal during the dedication and unveiling of The Iraq and Afghanistan memorial on March 9, 2017 in London, England. (Photo by Jeff Spicer/Getty Images)

LONDON, ENGLAND - MARCH 09: Princess Anne, Princess Royal during the dedication and unveiling of The Iraq and Afghanistan memorial on March 9, 2017 in London, England.  (Photo by Jeff Spicer/Getty Images)

LONDON, ENGLAND - MARCH 9: Princess Anne, Princess Royal speaks with British military personnel at a reception following the unveiling of the new memorial to members of the armed services who served and died in the wars in Iraq and Afghanistan at Victoria Embankment Gardens on March 9, 2017 in London, England. (Photo by Chris J Ratcliffe - WPA Pool/Getty Images)

LONDON, ENGLAND - MARCH 9:   Princess Anne, Princess Royal speaks with British military personnel at a reception following the unveiling of the new memorial to members of the armed services who served and died in the wars in Iraq and Afghanistan at Victoria Embankment Gardens on March 9, 2017 in London, England. (Photo by Chris J Ratcliffe - WPA Pool/Getty Images)