

Accordingly, the Romans evolved a new tactical system based on small and supple infantry units called maniples. The expanding early Roman Republic found the Greek phalanx formation too unwieldy for fragmented fighting in the hills and valleys of central Italy. The term legion also denotes the military system by which imperial Rome conquered and ruled the ancient world. Legion, a military organization, originally the largest permanent organization in the armies of ancient Rome. Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.

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