A commissioned officer.
A respectful term of address for an officer, especially a police officer.
One who has a position of authority in a hierarchical organization, especially in military, police or government organizations.
One who holds a public office.
An agent or servant imparted with the ability, to some degree, to act on initiative.
To supply with officers.
To command as or like an officer.
An officer or private of the Royal Engineers.
Historical term for a combat engineer that is still used in some armies, in other words an engineer or a soldier engaged in attacking, destroying, and circumventing or building fortifications, bridges, and roads; a military engineer active in a combat zone.