What is one of the soldiers of the first regiment of foot of the British army, formerly called the Royals, and supposed to be the oldest regular corps in Europe; -- now called the Royal Scots called?

royal — (Mil.) One of the soldiers of the first regiment of foot of the British army, formerly called the Royals, and supposed to be the oldest regular corps in Europe; -- now called the Royal Scots. (Webster's 1913.)

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