Picket (military)

A picket (archaically, picquet [variant form piquet]) is a soldier, or small unit of soldiers, placed on a defensive line forward of a friendly position to provide timely warning and screening against an enemy advance. It can also refer to any unit (e.g. a scout vehicle, surveillance aircraft or patrol ship) performing a similar function. A picket guarding a fixed position may be known as a sentry or guard.

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