Field-officers

Field-officers, in the Army, are always mounted officers—viz. majors, lieutenant-colonels, and colonels. They command, in the infantry, half-battalions (or wings), battalions, and regiments respectively; whilst the captains, lieutenants, and sub-lieutenants are called company officers. In the cavalry, artillery, engineers, and other corps, officers bearing the same titles are called field-officers, but their duties and commands are different from those of the infantry.