I have read many many many books about the Manhattan Project, mostly about the scientists. In nearly all of them, Groves is mentioned in passing, neither negatively or positively. So I was interested in reading a book that centered around the man.
Unfortunately, the author was totally overwhelmed by the subject, and sank into meaningless detail at every opportunity (such as spouting off the dimensions of buildings, how many miles of corridors, how many windows they have) without really giving any background information about them, how they came to be built, or anything relevant. This was repeated throughout the book.
The author presented this book as an objective defense of Groves, claiming that every other book about the people involved in the project vilified him. However, while this book took every opportunity to present him in a positive light, I was very disgusted by him.
To give just one example. He had a mania for secrecy when he was running the project. He removed people from projects for alleged leaks, had people investigated, never let anyone see any more than they had to. Which, on this project, in this war, would be fine. However, after the end of the war, when it was removed from his control, he started leaking documents and information to the press and Congress. He was probably a bigger security risk than anyone else. The hypocrisy of that alone should have sent him to jail.
He came across as the worst type of military officer, angling for promotion and credit at every opportunity rather than doing as so many others do - which is to just do their job.
I'd recommend Richard Rhodes two books on both the atomic bomb and the H-bomb if you want a good picture of what happened.