A few short months removed from the events of 9/11, LT Warner is a young reserve officer with a burning desire to serve. Presented with the opportunity to do so in the new Global War on Terror, he jumps into his new assignment full blast, oozing with patriotism, a lot of cockiness, and not much of a plan. But soon enough he finds that his new normal will be clouded with uncertainty. New soldiers, new leadership, and a new geographic location are just the tip of the iceberg.

As the rear cargo door of the plane lowers to reveal a pitch-black Afghanistan night, the young leader encounters his first real challenge: simply leading the team off the airplane-over an airfield riddled with landmines. From there, 20-Year Letter follows LT Warner throughout the entire undertaking, chronicling the bad, the terrifying, the stressful, and even a little bit of the good. His tale is a comprehensive perspective of everything that isn't glamorous about war.