A type of light infantry units in Ancient Greece who often served as skirmishers(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "peltast" in a sentence
"Thrace had invented the peltast, the quick and mobile lightly armed infantryman who fought at close range with a knife or at a distance with a javelin."
"“No, nor yet a peltast”; but he had been ordered by his messmates to drive a mule, although he was a free man."
"Unhindered by body armor, a peltast could move much more quickly than the fully armed hoplite, whose equipment was both far more heavy and far more expensive than theirs."