Each English archer carries twelve Scotchmen under his girdle.
This was a common saying at one time, because the English were unerring
archers, and each archer carried in his belt twelve arrows (
“The Pope identifies himself with the `Master' and addresses those 700 prelates as the `Twelve.' ” —The Times, December 11, 1869.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894