War by Sebastian Junger is a fantastic look into the War in Afghanistan. I feel like not many people have much of an idea of what the fighting is like over there and this really shines a light on it. At the time this was written the Korengal Valley was proclaimed to be the deadliest place on Earth.
Also:
The documentary Restrepo, made from footage filmed at the same time Sebastian Jünger wrote his book War (http://www.amazon.com/WAR-Sebastian-Junger/dp/0446556246/ref=ntt_at_ep_dpi_1), premieres November 29th on the National Geographic Channel. People who have On Demand through Comcast can actually watch it right now through On Demand.
Give the book War (Sebastion Junger) a read. It's not an Afghan insurgency we are fighting. Most of the enemy are being imported from other countries through Pakistan. Foreign men are paying the Taliban to come in and shoot at Americans.
http://www.amazon.com/WAR-Sebastian-Junger/dp/0446556246
Junger is one of the journalists in Restrepo. It's not a pro-american book.
Not really subtle, but War by Sebastian Junger details the bonds between a group of men fighting in Afghanistan in a highly realistic manner. By the end of it you can completely understand how they do what they do and why.