There are two military histories I've read that have a use beyond the interest of the casual military or modern history buff. This is one of them, the other is Andrew Gordon's "The Rules of the Game",The Rules of the Game: Jutland and British Naval Command
(wow the price of that seems to have gone vertical, but I'm not surprised, it's more than good).
Robin Neillands' book strikes me as careful, balanced and interesting to read. I read it because I freely admit that there was a huge black hole in my understanding of what happened post Normandy landing. He pays a lot of attention to the human and 'political' side to the campaign, which appeals to me because I'm really not interested in military histories that quote endless statistics on how many howitzers so and so had lined up against so's and so's ZZZzzzzzzzz! Not so this book.
As others have commented, it may upset and annoy some, and give others something to dwell on. His conclusions on the PR and politics of the post Normandy campaign are probably a metaphor for what we see in world politics today, particularly for those of us who live in the 51st State.
Putting that aside, I'd quite like to ditch all the consultants who peddle 'leadership development' to public and private sector organisations and companies, and simply get directors and managers to read these two books and then apply them to their own situations, style of leadership and personalities...I suppose it may be tricky getting them to read a book that's more than 1cm thick, but they are both very readable.