Batman (military)
A batman or orderly is a soldier or airman assigned to a commissioned officer as a personal servant. Before the advent of motorized transport, an officer's batman was also in charge of the officer's "bat-horse" that carried the officer's kit during a campaign.[1] This British English term is derived from the obsolete bat, meaning "pack saddle" (from French bât, from Old French bast, from Late Latin bastum).[2]
A batman's duties often include:
The action of serving as a batman was referred to as "batting". In armies where officers typically came from the upper class, it was not unusual for a former batman to follow the officer into later civilian life as a domestic servant.