C2 noun /ˌeɪd də ˈkæmp/
aide-de-camp
officier militaire agissant comme assistant confident d'un officier supérieur
Meaning
A military officer acting as a confidential assistant to a senior officer.
Example
The general was accompanied by his aide-de-camp during the ceremony.
Le général était accompagné de son aide-de-camp lors de la cérémonie.