We find that the Romans owed the conquest of the world to no other cause than continual military training, exact observance of discipline in their camps, and unwearied cultivation of the other arts of war.

Despite Eutropius' location in Constantinople the scholarly consensus is that Vegetius wrote in the Western Empire. Nothing is known of his life or station beyond what he tells us in his two surviving works: Epitoma rei militaris (also referred to as De Re Militari) and the lesser-known Digesta Artis Mulomedicinae a guide to veterinary medicine.