OK. That's it.
Although the author knows his subject, this book lacks the specific historical details which Osprey is famous for. It is written as a general historical survey and is therefore most suitable as an introduction to the subject for someone who is new to the field. I think it is fair to say that the subject is far too ambitious for one of Osprey's slim volumes. It would have been better to focus on a narrower subject, e.g., Russian Combat Reconnaissance, and provide greater detail. Osprey is, after all, publishing for a specialized audience. At least, I hope so.