The Prince of Wales Attends New Zealand Battle of the Somme Commemorations [Getty Images]

LONGUEVAL, FRANCE - SEPTEMBER 15: Prince Charles, Prince of Wales, Field Marshal of the New Zealand Army, attends the New Zealand Somme Commemorations at the Caterpillar Valley Commonwealth War Graves Commission (CWGC) Cemetery, on September 15, 2016 in Longueval, France. (Photo by Arthur Edwards - Pool/Getty Images)

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