I had pretty low expectations when I started reading this book, as it sounded more like an academic exercise than anything else. It turns out, however, that the author has done a masterful job of researching then describing the incredibly obscure and complex history of Transbaikalia during the Russian Civil War. The cast of characters includes Russians, Chinese, Japanese, Czech, US, British, French, Romanian, Serbian, etc, etc, and yet the author somehow dug up an incredible wealth of information--the bibliography and notes are very impressive.
That said, this book is really only for those with a strong interest in the topic, or better yet, conducting some kind of research. The level of detail and length might be overwhelming for a reader with only a casual interest in the topic.
The only negative comment I have about the book (at least the kindle version) is the complete absence of maps, which are generally essential for understanding any kind of military history.