aide-de-camp
noun [ C ] uk/ˌeɪd.dəˈkɑ̃ː/ us/ˌeɪd.dəˈkæmp/ aides-de-camp uk/ˌeɪd.dəˈkɑ̃ː/ us/-ˈkæmp/ (abbreviation ADC)
（陆军或海军）副官；随从武官；随从参谋
a military or naval officer who helps an officer of higher rank
He became Napoleon's aide-de-camp in 1804. 1804年他成为拿破仑的副官。
Compare: adjutantaide