About halfway through this book, I realized what bothered me so much about this series. I REALLY dislike Travis Long. He is an annoying character who feels like he should develop and grow, but never does. In the first book, it made sense for him to be hidebound and rules-obsessed, but in the 10+ years since, he should have mellowed. Although it seems at times like he has, he'll turn around and do something to show he has not.
So why, if I dislike the main character, did I rate this book 4 stars? Because really, LT (later LCDR) Long does not play the starring role. Other characters are taking more of the spotlight, which is making this series better. Also, this book is slowly getting back to what I like about the Honor Harrington books - space combat! There is still a lot of politics, and the lead-up to the battles is long, but even the lead-up is good, in that it builds the way the early HH books built. You know where it is going - you just have to get there.
However, one thing really bothered me at the start of the book. Earl Breakwater does not seem to pay a political price for his shortsightedness. The Star Kingdom ends Book 2 with a clear sign that the rest of the galaxy is out there and they need a strong defense force, but the man who has been fighting against that same force (who has been shown to be clearly very wrong), just goes about his life and job. In reality, the King and Defense Minister could have easily spoken up and shoved Breakwater's folly in his face, weakening his political power and reducing him to a back-row hack. (He is the Exchequer, but he serves at the pleasure of the King, and pulling the rug out from under him would have been the perfect opportunity to take away his position.) And yet, they do nothing. Everyone just continues along as if no major crisis had barely been averted by the horribly under-supplied, under-staffed Navy. (I suspect the book was written that way to lead into the rise of Elizabeth II, but it makes no sense in-world.)