I won't add much to the many reviews of the text of this excellent book, but wanted to mention a few things about the Kindle version, because few of the reviews mention it:
1) reading this book on any kind of Kindle device is probably not a good idea if you want to be able to read the maps, but I have been pleasantly surprised by the maps when reading this book with the Kindle app on my iPad--the campaign maps are quite clear, and the battle maps are very nice, in three colors (black, white, and red), and all the maps can be enlarged for better viewing. All in all, very legible and nice maps.
2) A previous reviewer mentioned that there was no table of contents in the Kindle version (!), but this has been fixed as well, with links to all of the chapters, subchapters, maps, illustrations, etc. Especially with the search feature, the kindle version is very easy to navigate around.
All in all, an excellent read and a great reference to carry around on your iPad.