aide-de-camp

• ADC
• aid-de-camp (dated)

Unadapted borrowing from French aide-de-camp, from aide + de (“of”) + camp (“(military) camp”).

• (UK) IPA^(key): /ˌeɪd dɪ ˈkæmp/, /ˌeɪd dɪ ˈkɒmp/
• (General American) IPA^(key): /ˌeɪd dɪ ˈkæmp/

aide-de-camp (plural aides-de-camp)

1. A military officer who serves as an adjutant to a higher-ranking officer, prince or other high political dignitary.

   Unlike the orderly or batman, a humble low-ranking servant, an aide-de-camp is often a general, who before the institution of the chief of staff could hold a similar position to his chief.

• aide-de-campship

• equerry