I’m diggin your pic, it’s really starting to come together. The new face, and the explosion adds to the tension. I liked the idea someone else said, about adding a grenade hitting the water right next to the young kid, and having his eyes fixated on it. I think that would really make the tension level rise. Showing just as the grenade hits the water with a splash coming up… that would be sweet, or something should be in the water right there in front of the youngster (Maybe a fallen comrad) so it really nails the point that this kid is just realizing what he has gotten into.
Although I really like the monocramatic quality, it might help to put a little more color in there. maybe as some more reds (like was suggested before) up on the hill top, explosions or something, perhaps not right at the top of the hill, but father back, makeing it look like a lot more action is going on the back side of the hill. having the clouds light up with some reds and organges may give that effect. I realize you haven’t added any of those effects yet and rightly so, but I’m just thinking out loud.
I’m not sure how graphic you want to make this but I was also thinking you could have a bullet ripping through the dudes arm or shoulder, that is right in front of the youngster, or if you don’t want to go graphic maybe a bullet ricocheting off of one of the guys helmets, I think that would be a nice detail. especially since you have all the bullet spay hitting the water.
Also it looks like our main character is holding something in his right hand. not sure if you just haven’t added the gun or what it is he will be holding, or what? I assume it would be a gun. What are your plans for that? Any way I really like how it’s looking and I’m sure what ever you do with it, will only enhance what you already have. I like it, keep up the good work and I’ll check back to see what you’ve done. Good luck. Hope I haven’t rambled on too much. Sorry if I did.