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
Classification of Thracian in its earlier period, and developed satem features over time. One of the arguments for this idea is that there are many close cognates between Thracian and Ancient Greek. There are also substratum words in the Romanian language that are cited as evidence of the genetic relationship of the Thracian language to ancient Greek and the Ancient Macedonian language (the extinct language or Greek dialect of ancient Macedon). The Greek language itself may be grouped with the Phrygian language and Armenian language, both of which have been grouped with Thracian in the past. As in the case with Albanian and