I recently found Oscar winning doc With The Marines On Tarawa on my regular torrent site.
Shot during the actual invasion and released in '44, it painted a quite gruesome and never-before-seen picture about the war (in the Pacific).
It's only 30 minutes with no real narrative or point to be made, simply an eyewitness account. Roosevelt himself decided that this movie would be released uncensored to give the people back home a clear picture about how the war was actually fought.