Story concept: Let slip the dog of war

Aiden is a 24 year old man who works as a butcher alongside his father and is content to live out his normal days especially after he had just gotten back from the Vietnam War. However, things grow dire when he along with some other townspeople get captured by a group of human traffickers who plan to sell them into slavery. Though Aiden has been known to have an unbreakable spirit, as well as freakishly superhuman strength, there is a certain darkness that hides within the young man's heart and soul that is just itching to come out the moment the traffickers try to break his spirit. And when the darkness finally gets unleashed onto the traffickers, as the saying goes, all hell breaks loose....