Cavalier

in fortification, is a work generally raised within the body of the place, 10 or 12 feet higher than the rest of the works. Their most common situation is within the bastion, and made much in the same form: sometimes they are placed in the gorges, or on the middle of the curtain; they are then made in the form of a horse-shoe. See Fortification. Their use is to command all the adjacent works and country round about it; they are seldom, or never, made but when there is a hill or rising ground, which overlooks some of the works. Trench - Cavalier , in the attacks, is an elevation which the besiegers make by means of earth or gabions, within halfway, or two thirds of the glacis, to discover, or to enfilade the covert way.