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https://karkanirka.org/2020/10/04/roman-soldiers-in-tamilnadu/
Many different interesting little details. My favourite is his theory on the difference between Yavanas and Milecchas (both old Tamil terms for foreigners): "Possibly, anyone whose language was known and could be understood were called Yavanas. People who could not understand or talk either in Greek or Tamil could have been called [Mileccha]." So Mileccha was like "barbarian" in the original Greek sense - people who spoke "bar bar bar" as in you couldn't understand them.
