I read this in college and it remains one of the most memorable books I've read. It is the story of three generations of men who fought in WWI, WWII and Vietnam, with theirs stories interwoven throughout the book. It's been 40 years since I read it, so I'm not sure how I would rate the book today, but to a nineteen year-old fighting-aged youngman, it resonated like little else at the time.