On a hot July day on the plains of Kansas a US Army mechanized infantry company from the 1st Infantry Division gets a very vague warning order and the young troopers saddle up on their steel beasts to go try to control "civil unrest", whatever that means. Police in a small town start firing on people in self defense, people who seem to have gone violently insane. A prisoner at Fort Leavenworth out on work detail sees a strange murder and is forced to make a run for it. As the situation starts to descend into chaos, confused orders are given, old sins are forgiven in exchange for needed help and the Bradleys and Abrams soldiers fight a desperate battle using every weapon on hand. Chaos reigns in the heartland of America, spreading ever outward.

The Apocalypse written as only a veteran infantryman can, The Thin Dead Line is set as a companion series to the best selling Irregular Scout Team One by J.F. Holmes.