Nice. I think WWI is more important the WWII. WWII happened because of the aftermath of WWI. Anywho, there is a great level of detail here and I love it. I know you made this before Brickarms came out with their Stalhelm and Brodies. Yes, they did have Stalhelms in WWI, starting in 1916, replacing the Picklehabue. You should do a redone version of this.
Quoting Magma Guy
I think you could add some more details like burned bushes, knocked off trees, plants and some more pieces of metal/wood on the ground.
That was all non existent on a WWI battlefield. Planets were decimated, it was mud, dirt, sand, and blood. Metal wasn't used all that often back then so metal in the middle of a field would be we1rd.