legion

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legion Basic organizational unit of the Roman army from the early Republic to the fall of the Empire in the West in the 5th century ad. During the great period of Rome's expansion, a legion was about 6000 men strong, consisting mainly of heavy infantrymen (legionaries), with some light troops and cavalry in support. The legion was subdivided into cohorts (420 men each), maniples (120 men each), and centuries (100 men each).

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