Functionary and Commandant

noun

• A worker who holds or is invested with an office.
  • synonyms: official

(n.) One charged with the performance of a function or office; as, a public functionary; secular functionaries.

noun

• An officer in command of a military unit.
  • synonyms: commanding officer, commander

(n.) A commander; the commanding officer of a place or of a body of men; as, the commandant of a navy-yard.