Gymnetes
Gymnetes (Greek: gymnetai, “naked”, “unprotected”) were lightly armed infantry in ancient Greek armies – javelinmen, archers, and slingers – who lacked defensive weapons, as they were intended solely for ranged combat. They only became a regular component of Greek armies following the march of the Ten Thousand (401 BC). They were typically recruited from peoples renowned for their skill with these specific weapons — for instance, Cretans as archers, and Rhodians and Thessalians as slingers etc.
Source: Meyers Großes Konversations-Lexikon, 6. Auflage 1905–1909