For eight months in 2008, U.S. Army Capt. Matt Zeller served as an embedded combat adviser with Afghan security forces in Ghazni, Afghanistan. Watches Without Time is a compilation of the emails he sent home to family and friends during that period--so that, as he writes in the Preface, "should anything have ever happened to me, they would know what I went through."Watches Without Time gives a granular account of the challenges Zeller and his men...