I am reaching from other games here, Red, but in the tabletop miniature games I don't have time to play anymore, each figure on the table usually represented about 50 men. That ratio was true for everything except elephants, where one elephant model could represent anywhere from 2-20 or so elephants. The reason was the effect they had on the battlefield could be way out of proportion to their numbers, and also because very few armies every could field hundreds or thousands of them.