Aide-de-camp

An Aide-de-Camp is a personal assistant, secretary, or adjutant to a person of high rank in Starfleet or the Federation, usually a flag officer, a councillor, or a senior diplomat. The first aide-de-camp is typically the foremost personal aide.

For those flag officers with more than one aide, the senior-ranking aide is usually considered to be the senior aide and serves in the capacity of coordinating the other aides and the others of the flag officer's personal staff.

Vanguard Command
Starfleet officer Gen, the first fully functional Maddox-Data type android ever constructed, served as the Aide-de-Camp of then-Admiral, and then later Senior Ambassador-at-Large, Maximus Hunter from 2378 to 2380.