Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An extremely useful resource

Like all of John Erickson's work, this book is a valuable resource for understanding the complexity of war on the Eastern Front. The book includes an excellent array of photographs, many of which are not readily available elsewhere, complemented by thoughtful and informed summaries of the major events of the war in the east.Please do not be deterred by political agendas evident in other reviews. Take a look at the book and judge for yourself.