The 1st century BCE Greek historian Apollodorus, quoted by Strabo, affirms that the Bactrian Greeks, led by Demetrius I and Menander, conquered India and occupied a larger territory than the Greeks under Alexander the Great, going beyond the Hypanis towards the Himalayas:[REF] .
Greek and Indian sources tend to indicate that the Greeks campaigned as far as Pataliputra until they were forced to retreat.