The narrow feeling of the trench is certainly there. Very nice job!
However the displacements looks a bit uneven and sharp, Smoothing would be nice, but thats up to you.
It says U.S army on the box, is this because of US airplanes dropping them or is it going to be replaced?
The grass looks very cool, however a bit too green to fit in the mud. Perhaps a bit more brown/yellowish colour?
Is that german a Prop or something?