While I didn't always find the prose to be the easiest to read (I think some of the sentences are unnecessarily complicated), the fact that it has good maps to go along with the writing means that it is rarely confusing.
I am a big fan of maps, and I think especially for military history, good maps can really help you get a better feeling for what is going on. This book is great for letting you see the maneuvering. It goes into sufficient detail for most important battles and does its maps very consistently from page to page, which earns it my respect.
The star of this book are the maps, not the writing. The wiring is almost bullet statement like and amply describes battles but the maps are beautiful and help one visualize the ebb and flow of the entire war.
The writing was inconsistent, occasionally being cringeworthy, but mostly supported the real star of the book - the maps. I highly recommend this to anyone who wants to understand the ebb and flow of the war in a short read.