Historically chariots were mostly used as transports for the nobility, they'd ride them into battle then hop off to fight. The greeks actually practiced boarding and disembarking chariots as an Olympic competition. Some cultures also used them as mobile archer/skirmisher platforms, but that died out in favor of horse mounted archers/skirmishers. Chariots were pretty much only ceremonial vehicles by the games timeline. Only the Britons still really used them in the west. The Scythed Chariots were developed as a dedicated shock weapon during this time, but there's not much evidence they were widely used.