Indian armies are predominantly archers combined with elephants. Chariots and cavalry have their role, but there is not so much in a way of skirmishers – one could say that Indian skirmisher would just be a bit more loose formation of archers. Some javelin armed light infantry exists, and is quite similar to their western counterparts. At VBU 4 armed with javelin, they are quite good all around units.
Because I had no particular javelin troops for Indian army, I decided to use some of the extra Gauls that I had acquired much earlier by accident.