The Art of War by Sun Tzu
I didnt get much out of this. Maybe having just read War and Peace, and watching Ken Burns docs, Ive just seen the priniciples of miltary strategy applied within a much more interesting context. Most of the stuff in this book is just kind of...."duh". A general that exploits the weaknesses of his enemy gains a great advantage. take the offensive when you have an advantage. Take the defensive when at a disadvantage. well um yeah.
Furthermore, the version I read poorly dispersed the annotations throughout the text, making it a horribly clunky read.