Wonderful painting and groundwork, love it. The camo smocks are spot on, and the water looks real. If you wanted to add one additional detail, it would be the starter strip for the MG-34 ammo belt hanging from the ejection port. You can see it at the end of the belt in this pic.
You can see how it looks on Jeff's 200mm figure
If you wanted to show that he had fired rounds, you would need to add empty links as shown in the first pic, the MG-34/42 used non-disintegrating ammo belts. Again, excellent work, thanks for sharing.