Clint Eastwood's Iwo Jima and Hollywood's post-war war flicks have got not a thing on this U.S. army/navy/marine docu-short about the WWII Pacific campaign. Watch any of that stuff after watching this, and it all becomes laughable, irritatingly-solemn, heavy-handed pap.
Real men die real deaths in this film, in front of the camera, but not performing for it; the men with the movie cameras, behind the cameras, die, too. It's gritty, not cleaned up, not made pretty, just edited together into a tight burst of reality.
Don't expect a story, though, because only exploitation makes narrative out of war. Expect images, startling and harrowing images of men's faces as they prepare for battle, face the enemy, and take in the aftermath of utter destruction.
This is cinema: death is not entertainment.