I'm only a quarter through the book, but it is obviously a social/political history (not a military history). The two stories being told are:

1. How did the change in political direction come to take place? That is, how did Pres. Bush come to oust Rumsfield and give control of the war over to a group of people who would implement a strategy at odds with Army institutional attitudes.

2. How did the US Army transform itself into an (arguably) effective COIN force? "Arguably" only because I don't want to digress into the whole can of worms about how to conduct COIN. The point is, a lot of people recognized we were going in the wrong direction and went to great effort to change direction.

Who moved troops where and when and why and etc. is completely beside the points the book is making.