there is no such natural enviurment in ofp1 (i think because of the ofp engine limitation), and i'm sure those envirument will provide more mission idea!
imagine a small squad recon along a small
creek (u can often see this in vietnam war movies) or a small path in forest and was ambushed by enemy from aside
IF had ofp2 more different kinds of enviurment, and there would be more possibility!!!!!