Book excerpt: Long before the Second Punic War (218 - 201 BC), Rome's influence extended no further than the Alps, and the wars that it fought consisted of small-scale raids and cattle rustling, with perhaps the occasional battle between armies. Nevertheless, within a century the seeds of an empire had been sown in Iberia, Africa, and the Greek east, and the Roman Republican army became the most successful of its day, establishing standards of discipline, organization, and efficiency that set a bench mark for the later armies of Rome. With the evolution of the Roman Republic came the adoption of the Manipular legion, a formation taken from the hoplite phalanx and first used in mass deployment against the North African nation of Carthage, during the Punic Wars. In this book Nic Fields examines the evolution of the Roman army from its defeat at Cannae through to their final success at Zama which saw a small city-based force evolve into a Mediterranean powerhouse, demonstrating how and why it became the most highly organized, sophisticated force in the ancient world.