Book excerpt: For nearly seven continuous years the "Warriors" maintained a combat presence in some of the most austere and remote locations during the height of the war in Afghanistan. Through written accounts, photographs and interviews, the soldiers of the 1st Battalion, 4th Infantry Regiment illuminate the shadows of war to provide personal insight into the tolls of combat. From its opening words to its closing remarks, 'Mortal Men, Immortal Warriors' leads you across an uncharted terrain within narrative non-fiction. Journey alongside with them in this compelling tribute to one of the United States Army's unsung military units.