BELGRADE, SERBIA - MARCH 17:  Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall arrive for a reception at the Serbian Parliament in honour of British women who served as nurses on the front lines with the Serbian army during Wold War I on March 17, 2016 in Novi Sad, Serbia. The Prince and Duchess are visiting Croatia, Serbia, Montenegro and Kosovo.  (Photo by Sean Gallup/Getty Images)