Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a real eye opener

My grandfather, who recently passed away, fought on Iwo Jima in the Marines 4th Division, and saw this flag raising. Not only was the story of the flag raisers very moving, but the rest of the story - the pieces in between - were also, if not moreso for me... as I read, with each sentence, I thought "Wow, my grandpa was there!" And by the Grace of God, he lived through it.This book is well written and researched. I was extremely pleased with it, and just purchased my 2nd James Bradley book.If you have any interest in Iwo Jima, not necessarily just about the flag raising, this is really a great read!!