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Britain's Queen Elizabeth II and Britain's Prince Philip, Duke of Edinburgh attend the unveiling of The Iraq and Afghanistan memorial at Victoria Embankment Gardens in central London on March 9, 2017. 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 / Toby Melville (Photo credit should read TOBY MELVILLE/AFP/Getty Images)

Britain's Queen Elizabeth II and Britain's Prince Philip, Duke of Edinburgh attend the unveiling of The Iraq and Afghanistan memorial at Victoria Embankment Gardens in central London on March 9, 2017.
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 / Toby Melville        (Photo credit should read TOBY MELVILLE/AFP/Getty Images)