Tom Barnett on Counterinsurgency -- US Army Field Manual 3-24 / Marine Corps Warfighting Publication 33.3.5.
The U.S. Army/Marine Corps Counterinsurgency Field Manual, with forewords by David Petraeus, James F. Amos, John Nagl and Sarah Sewell. Naturally, I loved this one. I had gotten a sneak-peak preview from Conrad Crane himself at Leavenworth in Dec 05 when I was there interviewing Petraeus for the "Monk of War" piece (and addressing the student body) and finally perusing the book was quite enjoyable. The Sewell foreword is the best by far. Really rocks.