Also, one more small detail - I noticed that the area at the bottom right corner of the map, immediately above the 'port' shown on the campaign map just along the south edge of the Zagros mountains, is the area where the ancient city of Susa was located. Susa was an important city of the Elamite, Persian and Parthian empires until it was destroyed by the Mongols in 1218. A small town still exists on the spot. That area receives a fair bit of rainfall because of the Zagros mountains, where clouds shed rain on the slopes which collect in the land at the bottom. Today it is part of the Iranian region of Khuzestan and it has the city of Izeh. Would be nice to see a touch of green over there
Here's a map showing its exact location, and a photo of the area today: