Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Insignia of World War II

I waited over a month for this book to arrive and when it arrived I found that it was well worth the wait. The book is not, nor does it claim to be, the definitive reference on military insignia during the WWII period. It is a solid secondary reference source though, and contains a great amount of information conveyed through excellent illustrations and interesting text. The major and minor participants are covered in a clear format that makes searching out specific information quite easy, although a "beefier" index would have helped. All in all this volume is an excellent addition to my "library" and would easily find a home in collectors and history buff's collections. Besides, where else could you find the rank insignia for a Captain of Engineers in the Finnish Navy?