An idea to convey that the soldier of the future will be heavily armored and synced to the environment with various sensors.
Augmented Soldier
The military of the future would most likely use augmented soldiers, both physically and mechanically. I took reference from current military machinery which always throws back to function over form, the sort of boxy look of things. The veins in on his face are to suggest he is taking some sort of performance enhancing cocktail to boost things like speed, stamina, strength...etc...