La fortification demonstree et reduicte en art
La fortification demonstree et reduicte en art is a 1620 Paris treatise on fortification by Jean Errard and Isaac Briot, aimed at military engineers and artillery officers. Its pictures are decorative headpiece and tailpiece bands of scrolling foliage, cartouches, and grotesque figures, with a central mask or armorial shield, which a designer could take as a model for symmetrical border ornament built from strapwork and acanthus.
