We've seen some pretty dope examples of futuristic military in movies like District 9 and yet-to-open Chappie. Some super amazing armors, guns and gear, in a vision of a future where technology is super advanced and warfare has evolved.
Minovo Wang, a Chinese concept artist comes up with his own vision of futuristic warfare, and it's super badass. Here you can see some of his artworks. For more of it, please visit his portfolio at ArtStation. I hope you enjoy these! Cheers. ;)