"Si vis pacem, para bellum." -Flavius Vegetius Renatus, The Military Institutions of the Romans, (390 A.D.) The Military Institutions of the Romans (original title in Latin De re militari) is a treatise by Vegetius, a 4th century Roman writer about Roman warfare and military principles. This treatise taught the lessons of the Ancient Roman way of war to the political and military leadership of the 4th century. During...