Here is the first one. Roman Velites.
The Velites are the youngest and poorest among the Early Republics ranks. These men cannot afford to equip themselves with the gear required to serve in the Hastati. The Velites arm themselves with the Hasta Velitaris, a light javelin, from which they get their name. The Velitaris is of similar make to the pilum, the tip designed to break upon impact and make the javelin useless for enemies to use. The Velites used a Parma, or buckler, in case they were drawn into melee. They wore a light headpiece, such as a wolfskin. These could be used by commanders to identify the soldiers. The Velites were not organized into units, but were instead attached to Hastati units. Their tactical role included harrying the enemy into taking rash actions. They were also used against elephants and chariots, their lighter mobility making it easy for them to outmaneuver the clumsy beasts and chariots.
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