This book thoroughly examines military medicine in the various cultures around the Mediterranean Sea from approximately 4000 BCE to 1453 CE. The author investigates each culture, the extent of its medical knowledge, and how the culture applied this knowledge to its military. As Gabriel reveals, most of the earliest cultures viewed disease as caused by the gods or other supernatural beings who were displeased with something the culture had done or not done. Therefore, most "medical" practice was in the form of incantations, charms, prayers, etc. However, some cultures began to see that there were physical causes of disease and developed more scientific treatments for disease and injury. Far above all of these cultures were the Romans, who had medical knowledge based on direct observation, testing, and analysis - - the beginnings of the scientific method. They used this information to form the western world's first thorough system of medical training so that legionary physicians had accurate and consistent training across the Empire and through time. In addition, Romans invented hemostats, ligatures to stop bleeding, amputation that most could survive, effective antiseptics and antibacterials, and much more. When the Empire fell in the west, all of this knowledge was lost, and the western world would not achieve the level of medical care the Roman military had until WWI.