Military of ancient Rome

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Active	753 BC–476 AD
Disbanded
Country	Ancient Rome
Allegiance	Roman Republic, Roman Empire
Branch
Type	Army, Navy
Role	Defense, Expansion, Control
Size	Varied over time
Part of
Garrison/HQ	Rome

The Military of Ancient Rome was a formidable force that played a crucial role in the expansion and maintenance of the Roman state. It evolved over time from a citizen militia to a professional standing army, and its structure, tactics, and strategies were key to Rome's dominance in the ancient world.

History

The Roman military underwent significant changes throughout its history, adapting to new challenges and incorporating innovations from conquered peoples.

Early Roman Army

In the early days of Rome, the military was composed of citizen-soldiers who were required to serve in times of war. This early army was organized into legions, each consisting of about 3,000 infantry and 300 cavalry.

Republican Army

During the Roman Republic, the military became more structured. The Manipular formation was introduced, allowing for greater flexibility on the battlefield. The army was divided into units called maniples, which were smaller and more maneuverable than the earlier phalanx formation.

Imperial Army

Under the Roman Empire, the military became a professional force. Soldiers enlisted for long terms of service, and the army was divided into legions, each consisting of about 5,000 men. The Praetorian Guard was established as an elite unit tasked with protecting the emperor.

Structure

The Roman military was organized into several key components:

Legions

The legion was the primary unit of the Roman army, typically composed of 4,000 to 6,000 soldiers. Each legion was divided into cohorts, centuries, and contubernia.

Auxiliaries

Auxiliary troops were non-citizen soldiers who provided additional manpower and specialized skills, such as archery and cavalry.

Navy

The Roman Navy played a crucial role in securing trade routes and projecting power across the Mediterranean. It was instrumental in battles such as the Battle of Actium.

Tactics and Strategy

Roman military tactics were based on discipline, organization, and the effective use of formations. The Testudo formation was a famous defensive tactic used to protect soldiers from projectiles.

Legacy

The military of ancient Rome left a lasting legacy on warfare, influencing military tactics and organization for centuries. The Roman emphasis on discipline, training, and engineering set standards for future armies.

Also see

• Roman Republic
• Roman Empire
• Roman Legion
• Praetorian Guard
• Roman Navy