[Orwell1984]

Have my copy in hand.

It's profusely illustrated with maps, pictures, and diagrams illustrating concepts.
Definitely up to Hikoki's normal production standards.
Content appears quite thorough.
First three chapters look at history of Army Co-operation in RAF, with formation of Army Co-operation Command and coverage of Exercise Spartan.
Then on to North Africa with coverage up to the battle of El Hamma. Appendices cover Army/Airforce structures, Characteristics of weapons and relevant unit codes.
The text is not academic level deep but gives good coverage of the subject.
If you have interest in the subject, worth getting IMO.