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Britain's Princess Anne, Princess Royal (L) speaks with British military personnel, at a reception on Horse Guards Parade in central London on March 9, 2017, after the unveiling of The Iraq and Afghanistan memorial at Victoria Embankment Gardens. The preceding "Service of Dedication" honoured the service and duty of both the UK Armed Forces and civilians in the Gulf region, Iraq and Afghanistan, and those who supported them back home, from 1990-2015 / AFP PHOTO / POOL / CHRIS J RATCLIFFE (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)

Britain's Princess Anne, Princess Royal (L) speaks with British military personnel, at a reception on Horse Guards Parade in central London on March 9, 2017, after the unveiling of The Iraq and Afghanistan memorial at Victoria Embankment Gardens. The preceding "Service of Dedication" honoured the service and duty of both the UK Armed Forces and civilians in the Gulf region, Iraq and Afghanistan, and those who supported them back home, from 1990-2015 / AFP PHOTO / POOL / CHRIS J RATCLIFFE (Photo credit should read CHRIS J RATCLIFFE/AFP/Getty Images)
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LONDON, ENGLAND - MARCH 09: Camilla, Duchess of Cornwall 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: Camilla, Duchess of Cornwall during the dedication and unveiling of The Iraq and Afghanistan memorial on March 9, 2017 in London, England. (Photo by Jeff Spicer/Getty Images)
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LONDON, ENGLAND - MARCH 9: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet veterans and serving members of the British armed forces 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 Alastair Grant - WPA Pool/Getty Images)

LONDON, ENGLAND - MARCH 9: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge meet veterans and serving members of the British armed forces 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 Alastair Grant - WPA Pool/Getty Images)
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LONDON, ENGLAND - MARCH 9: Catherine, Duchess of Cambridge smiles as she meets veterans and serving members of the British armed forces 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 Alastair Grant - WPA Pool/Getty Images)

LONDON, ENGLAND - MARCH 9: Catherine, Duchess of Cambridge smiles as she meets veterans and serving members of the British armed forces 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 Alastair Grant - WPA Pool/Getty Images)
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LONDON, ENGLAND - MARCH 09: (L-R) Catherine, Duchess of Cambridge, Philip Hammond and Sophie, Countess of Wessex 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: (L-R) Catherine, Duchess of Cambridge, Philip Hammond and Sophie, Countess of Wessex during the dedication and unveiling of The Iraq and Afghanistan memorial on March 9, 2017 in London, England. (Photo by Jeff Spicer/Getty Images)
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