I like this stuff, all of it looks very nice.
But some lil' advice, I don't know if you plan on using shaders on these levels, but if you don't, don't forget to bake in some shadows on that soldier texture, or else it looks out of place.
The train track looks nice too, but I can see some ps or ps-alike elements in there too clearly. For example, the bevel and emboss-filtering. Use a bit of uneven dodging and burning instead, and it'll look nicer. I'd also add in a layer of noise and use it to dirty it up the wood a bit.
Other than that, me like. Keep it up.
"Or perhaps we're just one of god's little jokes?"
