It's a fascinating book that looks at one family's enormous impact on the history and psyche of Germany from the late 1800s through the WW II. Looking at three men from three generations of German (Prussian) nobles, you can trace the ascendency of Germany in the 1800s, its near domination of Europe during WW I, and then the seeds of its downfall during WW II.
I bought the book because I was moving to Germany and wanted to know more than the basic history known by most Americans. I found this book at Powells and read it with great enjoyment. The author, former Time's editor I believe, did an excellent job balancing details with the flow of the writing.