History by Polybius. Volume I. French edition translated from Greek by Dom Vincent Thuillier. Comments of Military Science enriched with critical and historical notes by M. De Folard. Paris, chez Pierre Gandouin, Julien-Michel Gandouin, Pierre-Francois Giffart and Nicolas-Pierre Armand, 1727. Printing by Jean-Baptiste Lamesle. "Traite de La Colonne" (Treaty of the Column). How to form and fight in it. The Roman sometimes drew up their forces in the form of a wedge, or "tete-du-porc". Detail. Engraving. Later colouration.