Except for this ugly "WWII" filter (1), the terrain in this sim is so good, excellent geometry and excellent disposal of the trees and the fields, so natural.
(1) if I had to choose some kind of filter, I would have, instead this "Band of Brothers" brown mask, choosen a filter which would portray the Kodachrome look of the fourties :
http://www.shorpy.com/image/tid/179
of course, as an option, I prefer realistic lighting.