adjutant
noun
[ ˈadʒʊt(ə)nt ]
• a military officer who acts as an administrative assistant to a senior officer.
• "he eventually became adjutant to the commander of the tactical air force"
• a large black-and-white stork with a massive bill and a bare head and neck, found in India and SE Asia.
Origin:
early 17th century (in the sense ‘assistant, helper’): from Latin adjutant- ‘being of service to’, from adjutare, frequentative of adjuvare ‘assist’ (see adjuvant).