Taka and Pelte

[Companion Cavalry]

I see you all didn't notice when I posted a clear explanation of how the Thraikioi came to adopt the Pelte.
Here is a transcription of what the image said:

After the experience of the Persian Wars, the Greeks realised the value of lightly-armed missile troops such as archers, slingers, and peltasts. Originally, peltasts where Thracian tribesmen fighting in their native dress, but later the term came to denote a particular type of footsoldier. His name derived from his shield, the pelta, which was frequently crescent-shaped, but which might also be circular or oval. It was made of wicker and covered with goat or sheep skin. The use of the pelta and the peltast's lack of armour enabled him to evade the charge.

The author doesn't say it outright, but the Thraikians adopted the Persian taka when they drilled their soldiers in the new skirmishing role.