Amazon (DM 340) Alexander the Great in India/$20.00 In August of 227 B.C. Alexander moved his military campaign into the ancient gateway ot he Indian subcontinent - the Punjab. In June of 326 BC, Indian King Poros, fought Alexander in the Battle of the Hydaspes River. Poros deployed horse cavalry on his flanks with infantry and 300 elephants in his center. Alexander attacked Poros'and won.archers. Alexander spared Poros and made him an ally. Coin celebrates victory.