This book has the advantage of having been written by a contemporary of Colonel Jones who served with him as a junior officer in various places (Devon and Dorsetshire Regiment, now I think subsumed into The Rifles). The author stayed on to command the Devon and Dorsets and retired as a Major-General in 1995. Jones himself moved over to the Parachute Regiment, commanding 2 Para in the Falklands, where he made his individual charge into history and legend, winning a posthumous Victoria Cross.
The author writes very well, better than most people of similar rank (cf. memoirs of people like Admiral Donitz and the works of Montgomery) and does explain for the benefit of those of us without much or any military experience the jargon seemingly inseparable from khaki.
It seems that Colonel Jones was half-American and pretty wealthy. It does show that his wealth and arrogance made him some enemies even in places where such things are the norm (eg. Eton). And the author does not shirk from exposing Jones' unwillingness to take orders at times; also, his disloyalty to his senior commanders, at times.
I have to say that, as with others such as Ranulph Fiennes (who admitted to it) Jones might well have had a CV involving borstal or prison had he not been from the background he was. An armchair psychologist might wonder about his mental state, his lack of a brake on his own wishes.
I felt that the book was fair toward its subject. It showed Jones' positive qualities (courage, determination, honesty) as well as his more negative personality-aspects (rashness, rudeness, lack of thought in a crisis). The author does say that Jones might well have made general-officer rank had he survived the Falklands.
Well worth reading.