I really like this diorama style base, it is very characterful. I can really imagine them creeping through a trench getting ready to torch a bunker or something. The only thing I don't really care for is the gray around the base. I think it would look a lot nicer if you either painted it black around the base, or painted it a similar dirt color to the rest of the base. In this case I think the black would particularly add some nice contrast with the rest of the piece.