Peltast their ranks (to allow the Persian cavalry through) and proceeded to deal blows (with swords) and throw javelins at them as they went through. Xenophon's description makes it clear that these peltasts were armed with swords, as well as javelins, but not with spears. When faced with a charge from the Persian cavalry they opened their ranks and allowed the cavalry through while striking them with swords and hurling javelins at them. They became the main type of Greek mercenary infantry in the 4th century BCE. Their equipment was less expensive than that of traditional hoplites and would have been
Peltast example, in the Hellenica [3.2.16] Xenophon writes 'When Dercylidas learned this (that a Persian army was nearby), he ordered his officers to form their men in line, eight ranks deep (the hoplite phalanx), as quickly as possible, and to station the peltasts on either wing along with the cavalry. They could also operate in support of other light troops, such as archers and slingers. When faced by hoplites, peltasts operated by throwing javelins at short range. If the hoplites charged, the peltasts would retreat. As they carried considerably lighter equipment than the hoplites, they were usually able to evade successfully,