What is a noncommissioned officer or soldier who attends a superior officer to carry his orders, or to render other service. Orderlies were appointed to watch the palace. Macaulay called?

orderly — (Mil.) A noncommissioned officer or soldier who attends a superior officer to carry his orders, or to render other service. Orderlies were appointed to watch the palace. Macaulay. (Webster's 1913.)

Sources