The Modern Weapons and Demonic Army

The last battle between the demonic army and the human army is over. Thousands of denizens and demons from the demonic army died during the final battle, leaving the demonic army with nothing but small numbers on its path.  Demonic Lord Franzen is outnumbered, outgunned, and running out of options. The remnants of his army's only hope on the last expedition are to find the legendary weapons before the last human offense dropped them down.  The eternal battle between humans and demons decisively takes a modern turn when the demonic army uses modern weapons left by now dead dragon guardian, Dalrazir. It’s a wild free-for-all, with the human forces struggling to deal with the remains of the demonic army.  However, the weapons come with their own curse, in the form of modern doctrines and ways of thinking. With modern solutions, come modern problems clashing with classic way of thinking, especially in a world that doesn't follow the Geneva Convention.  This is a story about a demonic lord, an ogre, a wolf denizen, and a goblin. Or we should say, the commander, the special forces, and the grunt. Follow their adventures as they brought civilizations back to their land as quirks and mishaps happen from the curse of modern weapons.  This human is the commander of the army? Take this TAC-50 .50 BMG rifle and do your thing with him.  A horde of undead skeletons are outside of the gate you say? Get the M1 Abrams main battle tank and squash them! What did you say? A dragon? Forget about your S-Class adventurers. Dispatch the F-15!