"Empire Of The Summer Moon" by S. C. Gwynne was Disappointing

Empire Of the Summer Moon is about the Comanches and their warrior chief, Quarah.  I enjoyed the background history of the Indians and the battle scenes were very good.  As for the rest of the book, not so much.  For all the hype this book has received, I expected more.

Have you read this one? What did you think of it?