This book is a brief overview of U.S. and German tanks and tank destroyers at the time of the Bulge campaign, it compares them on the basis of equipment, characteristics and numbers. Well done, accurate and readable as are all of Mr Zaloga's works. Given the format it is a brief overview (this book is not a combat narrative), but if that's what you want this is the book to get. The text is nicely supported by period and modern photographs and illustration. Recommended to students of armored warfare.