Now that's where the brilliantly overhauled "Sherman" ended up!
Now to the suggestions:
Agree with the previous posts on the snow.
With some fantasy you could imagine that the kneeling soldier is aiming at some deer or boar (think I saw that on Band of Brothers, too) for the dinner.
The figure painter in me asks for more contrast in the painting of the figures (mainly on the faces): try washing and dry brushing it's a simple technique that adds some depth to the figures.
Bottom line: you made a great job, but there is some room for improvement (hope I haven't been too hard).