Based on a study of ancient sources and contemporary literature, this is a fast paced and compelling new account of the tempestuous last century of the Roman Republic.

The political process that culminated in the transition from Republic to Empire in ancient Rome began with the military reform of Caius Marius in the last decades of the 2nd century BC. Following the Civil War and Sulla's dictatorship, it developed further with the First Triumvirate of Caesar, Pompey, and Crassus, and two further civil wars. These wars, which saw Caesar pitted against Pompey, and Octavian fighting Anthony, ended in 27 BC with the rise to power of Octavian, the adoptive son of Caesar.

Before Augustus outlines a summary of the last years of the Roman Republic, weaving together the military, political, and social aspects. Scholar Natale Barca sets the protagonists within the complex societal and political system that they operated, analyzing their actions, and the epic battles that ensued.