Banquette

In fortification, a banquette is a small foot path or elevated step along the inside of a rampart or parapet, by which the musketeers get up to view the counterscarp, or to fire on the enemies in the moat. These are generally a foot and a half (approximately half a metre) high, and almost three feet (approximately 90 cm) wide. A banquette may also be an upholstered bench or a footbridge.