"Flag of our Fathers" is the book. I highly recommend it. Iwo Jima was a US battle fought by Marines and Navy. My grandfather was on the USS Baltimore at the battle. If I remember correctly, a fleet of 800 ships, 22,000 Japanese lives, and 26,000 US casualties for a small 8 square mile island. But it was very strategic for reaching Tokyo. This was a terrible battle won by the US.
Trivia - the well known photo was of the second flag raising. An officer wanted the first flag as a sovenier.
Trivia 2 - the picture was not "staged" and was taken completely by accident. Rosenthal didnt even know he had taken it when he swung around with his camera.
Casey