CHATHAM, ENGLAND - OCTOBER 13: Queen Elizabeth II visits the corps of Royal Engineers at Brompton Barracks in celebration of their 300th anniversary on October 13, 2016 in Chatham, England. (Photo by Samir Hussein/WireImage)
CHATHAM, ENGLAND - OCTOBER 13: Queen Elizabeth II visits the corps of Royal Engineers at Brompton Barracks in celebration of their 300th anniversary on October 13, 2016 in Chatham, England. (Photo by Samir Hussein/WireImage)