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Britain's Queen Elizabeth II (R) and Britain's Prince Philip, Duke of Edinburgh (L) arrive to attend Evensong in celebration of the centenary of the Order of the Companions of Honour at the Chapel Royal Hampton Court Palace, in Richmond upon Thames, in southwest London on June 13, 2017.
The Queen and the Duke of Edinburgh attended the service to celebrate 100 years since the founding of the Order of the Companions of Honour on the June 4, 1917 by King George V. / AFP PHOTO / POOL / Adrian DENNIS (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)