Vauban System of Fortification

A bastioned system in which the exterior side is generally 360 yards. The perpendicular of the front is 1/8 when the polygon is a square, 1/7 for the pentagon, and 1/0 for all higher polygons. Ail out works are commanded by the enceinte. Vaunturc — In fortification, any false wall; a work raised in front of the main wall; also written vaimnre; Tamure and auntmnrc Vava eur Gun. — A gun consisting of a steel tube with hoops of the same material. The strength is cast more upon the hoops and le upon the tube, which is quite thin and jacketed from the breech to a short distance in front of the trunnions, with, a second tube shrunk upon it. The hoops extend to the muzzle.