1911 Encyclopædia Britannica (1911)
“ PICKET, Piquet or Piquet (Fr. piquet, a pointed stake or peg, from piquer, to point or pierce) , a military term, signifying an outpost or guard, supposed to have originated in the French army about 1690, from the circumstance that an infantry company on outpost duty dispersed its musketeers to watch, the small group of pikemen called piquet remaining in reserve. Thus at the present day the word “picquet” is, in Great Britain at any rate, restricted to an infantry post on the outpost line, from which the sentries or “groups” of watchers are sent out. ”
