Small Scale Military Headquarters

Anyone have any information on the first major attack in Band of Brothers where they take out the 3 guns? I want to build a dio around that attack but not sure where i can get ideas or even a layout of it. Any thoughts?

http://www.heroesforever.nl/Richard%20D.%20Winters.htm

....scroll down for a basic top down diagram of the gun implacements.

Or just google image search "Brecourt Manor".