The 17 Hour Firefight (Afghanistan War series);

On April 22, 2007, the Second Platoon, C Company, 1/32, 10th Mountain Division, followed a lead that the most wanted terrorist in that part of Kunar Province was back at his home village of Shudergay. In the dark of night, the American soldiers head up the mountain to the remote village and unknowingly trap the insurgent commander. Dawn brings a quick exchange of fire eliminating several insurgents.
Answering the frantic call for help from the trapped enemy commander, from all over the Pech, and from across the Pakistani border, insurgents close on Shudergay to help free their trapped leader. The Second Platoon--accustomed to the enemy fleeing shortly after a firefight kicks off (and certainly once air support arrives)--is stunned that the enemy is not only staying and fighting but aggressively maneuvering on them. The battle escalates as soldiers from the Third Platoon attempt to relieve the surrounded Second Platoon and are themselves ambushed by insurgents arriving from Pakistan. The 17 Hour Firefight follows...