"The Unforgiving Minute," by Craig Mullaney. Mullaney is a West Point grad and writes about his time at West Point, Ranger School, and when he was deployed. I read it over the summer and it was an excellent read. I really recommend it, because he writes in such a frank manner that doesn't glorify war and death like some do.
Also, "One Bullet Away," by Nathaniel Fick. Fick was a Marine officer and writes about leadership and his time as an officer, especially as deployed in the early years of the war in a Recon unit. Another fantastic read.