Momento geek, também os tenho.
The Agrianians were a Paeonian related tribe that had a close relationship with Alexander. They were mountain men, noted for their ferocity in hand to hand combat, as well as their javelin throwing. They were able to tackle any terrain obstacle in their way. 1000 picked Agrianians were attached to the hypaspists and they were the elite light infantry in Alexander's army. They were the first foreign contingent to be incorporated into, and accepted by the army. Some few were armed with slings, this might have been the younger tribesmen. The slingers and javelin men seemed to operate together at a number of actions..notably Issus (which is the inspiration for the set-up above) where a detachment of Agrianes with some Companion squadrons in support drove back thousands of Persian threatening Alexander' right flank at the start of the action.