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Britain's Queen Elizabeth II (R), acting in her capacity as Colonel-on-Chief of the Argyll and Sutherland Highloanders of Canada, receives (L to R), Colonel Ronald Foxcroft (Honorary Colonel), Lieutenant Richard Kennedy (Honorary Lieutenant Colonel) and Lieutenant Colonel Lawrence Hatfield (Commanding Officer) at Buckingham Palace in London on May 19, 2015. AFP PHOTO / POOL / STEFAN ROUSSEAU (Photo credit should read STEFAN ROUSSEAU/AFP/Getty Images)

Britain's Queen Elizabeth II (R), acting in her capacity as Colonel-on-Chief of the Argyll and Sutherland Highloanders of Canada, receives (L to R), Colonel Ronald Foxcroft (Honorary Colonel), Lieutenant Richard Kennedy (Honorary Lieutenant Colonel) and Lieutenant Colonel Lawrence Hatfield (Commanding Officer) at Buckingham Palace in London on May 19, 2015. AFP PHOTO / POOL / STEFAN ROUSSEAU        (Photo credit should read STEFAN ROUSSEAU/AFP/Getty Images)