I will brief here because the story behind the map is all typed out in-game. Some of you may look at the map and think that this wont be any fun based on how the terrain looks. The story explains a little bit about why the terrain is the way it is, but on a more personal note, I did not have the time to dedicate to a very detailed terrain. The seige itself is enjoyable, and can present quite the challenge if you are not careful. I hope you enjoy, and if you are wanting to try a more detailed map, try looking at "Battle in the Wilderness" for seige, or "The Great Pine War" for a 1v1 multiplayer map.
UPDATE - Improved upon the terrain of the map, and fixed a few problems with castle structure. Also, improved a few enemy troop types and locations.
UPDATE 2 - Slight terrain modifications, as well as adjustments to help with balance.