Greatest Enemy: A David Rivers Thriller (American Mercenary, 1)

One year after the 9/11 attacks, he serves as an Army Ranger in Afghanistan.

His patrol enters the Shigal Valley, a desolate place with a fearsome reputation for enemy fighters--a reputation that David is about to experience firsthand.

As the first shots ring out over the valley, David must decide between military orders and gut instinct...and in the process, discover a hidden truth about himself.