The book "The History of Rome. Book V. The Foundation of the Military Monarchy" by Theodor Mommsen is one of the most authoritative works on the ancient history of Rome. This book examines the events that led to the establishment of a military monarchy in the Roman Republic. The author describes in detail the political and military events of the era, reveals the reasons for changes in power and military administration. Through skillful analysis of sources and events, Mommsen reveals the complex connections between political figures, the army and society of the Roman state. He examines the role of military leaders in the transformation of the Roman Republic into a monarchy and analyzes the impact of these changes on the further development of the Roman Empire. The book "History of Rome. Book V. The foundation of the military monarchy" is not only an important source for the study of the history of Ancient Rome, but also an important contribution to the understanding of the political and military system in the ancient world.