The Roman army was a set of land-based military forces employed by the
Roman Kingdom,
Roman Republic and later
Roman Empire as part of the
Roman military. For its main infantry constituent and for much of its history, see
Roman legion; for a catalogue of individual legions, dates and deployments, see
List of Roman legions. For the non-citizen auxiliary forces of the Roman Empire, see
Roman auxiliaries. For Rome's naval forces, see
Roman Navy. The size of the army in the late Roman Empire was about 128,000 - 179,200 men. It was very well organized hierarchically. The main Roman soldiers in the Empire were the
legionaries.There were, of course, other soldiers in the army; these were known as the
auxilia. Auxilia were non-citizens recruited mostly from the provinces. They were paid less than legionaries but at the end of their service they were granted Roman citizenship.
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