adjutant

Short definition from Wiktionary

Noun

1. 1
   A lower-ranking officer who assists a higher-ranking officer with administrative affairs.
2. 2
   An assistant.
3. 3
   Any bird of the genus Leptoptilos, a branch of the stork family (Ciconiidae) native to India and Southeast Asia.

Adjective

1. 1
   Assistant; who helps a higher-ranking officer.