In Roster Number Five-Zero, you will bear witness to the author's personal experiences, from beginning to end, of attending the toughest combat leadership course in the military—US Army Ranger School. You will learn of the daily hardships, challenges, and accomplishments of planning, moving, and executing combat missions at small unit levels. The time spent in this school is under the harshest conditions of terrain, weather, starvation, and sleep deprivation. Here, you will learn what the human body can truly endure.