The Light Chariots are in Rome vs the Barbarians.
Not quite. Those are Light BARBARIAN Chariots - they are listed separately from Light Chariots. LC have missile capability and 2 blocks/unit, LBC have no missiles, and 3 blocks/unit. LC always CC with 2 dice, LBC CC with 3 dice while they have 3 blocks, 2 dice thereafter. We still have not seen Light Chariot units - Egyptians, perhaps?