Adjutant
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An adjutant (from the Latin adiutans, present participle of the verb adiutare, "to help"; the Romans actually used adiutor for the noun) is an officer who assists a more senior officer.
Richard Boswell served as deputy adjutant and later adjutant to Lawrence Ishiguro during Boswell's time aboard Starbase 505. (Star Trek: Remington)
Pavlo Celcho once pretended to be the adjutant to the Starfleet Academy Commandant to break up a fight between several Starfleet Marines and Starfleet Security cadets. (Star Trek: Swiftfire: "The Front")
After Admiral Victor Harvey was incapacitated during the Battle of Guyra his adjutant ordered an evacuation of the Guyra IV Moonbase after it was sent on a collision course with Guyra IV. He was quickly evacuated with the unconscious Admiral Harvey and escaped the base's destruction. (Star Trek: Swiftfire: "Over the Horizon")
