(military) An officer who fulfills a non-combat support function, often in a headquarters or planning office.

An official responsible for investigating people who may be truant and compelling their attendance.

A voluntary, unpaid officer of an organization.

plural of corrections officer

A jailer.

(military) An officer who derives authority directly from a sovereign power and, as such, holds a commission charging them with the duties and responsibilities of a specific office or position.

plural of petty officer

(military, nautical) A naval officer with the rank of rear admiral or above. Such officers are entitled to fly a personal flag, especially on the flagship.

(Scotland) A person who looks after a large Scottish estate for a Lord, preventing illegal hunting and fishing, and liaises with tenant farmers.

plural of public officer