What is the author's style in War and Remembrance by Herman Wouk?

The book is divided into exposition and dialog. There are long sections of description which can become tedious. The book is long—more than 1,300 pages—and it can be tempting to skip over these descriptions. Nonetheless, the places become more real through these descriptions. It is noteworthy that the author includes a postscript of historical notes, indicating that the events and many of the people are real.