Early reviews are extremely positive, for the entire package. Cooler still, the bonus material is getting the recognition it deserves. Samples:

“… if all you’ve done is watch the series on HBO, you haven’t experienced the full impact [provided by the added features] of The Pacific.” – audioholics.com

“‘The Pacific’ Field Guide … interactive feature allows you to explore animated battle maps, listen to historical interviews, watch archival footage and much more. So much is packed into the Field Guide it’s impossible to describe it all. It’s safe to say that if you are interested in World War II, or even have a passing interest this feature contains a wealth of information for you.” – High Def Digest