This analysis re-evaluates the common narrative that the Roman Empire overstretched its resources after Justinian I's reconquests, arguing instead that initial troubles stemmed from Justin II's missteps. The book posits that Tiberius II and Maurice not only stabilized the empire but were on the verge of completing Justinian's ambitious project. Through Maurice's reforms, codified in the Strategikon, the Roman army achieved military superiority, decisively defeating major enemies by 602 and setting the stage for renewed expansion, a trajectory tragically cut short by Maurice's assassination and the subsequent mutiny that brought Phocas to power. The work meticulously details the period's tactics and analyzes key battles, including Melitene, Constantia, Sirmium, Nymphius River, Solanchon, Lake Urmiah, Plain of Canzak, Iatrus, and the Balkan campaigns led by Priscus and Comentiolus.

The book offers a detailed re-examination of a critical period in Late Roman military history, focusing on the strategic decisions and military capabilities of the era. It aims to correct prevailing interpretations by highlighting the successes of emperors like Maurice, whose reforms and campaigns positioned the empire for renewed expansion. The analysis is supported by a close study of tactical approaches and specific engagements, providing a comprehensive picture of Roman military prowess and the internal factors that led to its eventual disruption. The work is positioned as a significant contribution to understanding the resilience and strategic thinking of the Roman military in the face of numerous external threats.