The reason I love the movie so much is that is was well researched according to the information that was available at the time, and it provides both the Japanese and American perspectives. It takes you into the war rooms of both countries and shows the complexities and divisions that were present on both sides. It displays very well the fog of war.
It's 2:28 long so you'll need some time, but if you like this sort of thing it's well worth it. My step-dad fought in the South Pacific during WWII, including Iwo Jima, and that's partly why movies like this touch me. It feels personal. That infamous day, December 7, 1941, in many ways shaped my step-dad's life and to some extent mine. And more importantly, it shaped the history of the world and the America we live in today.
So again, it's a good watch if you have the time.