The movie is a true story. The book gave me bad nightmares, especially the chapter "Officer in Charge of the Dead". Saw it's premiere on TV, which had big time graphic warnings at the end of each commerical break. Sad to say - I doubt the REAL original cut exists. To date I've rented 3 different versions on VHS, none matched the original and one was cut to deliver a different theme - pure butchery. Your experience with this flick will vary wildly, depending upon which release you've happened upon. Probably Brian Denehey's best performance ever. One release I rented cut all the Marine Officer Training school and Ofcr in Charge of the Dead chapters entirely. My advice - read the book, then look for the longest version of this masterpiece that you can find. This sorely needs a restored DVD release. Marine Officer veterans of Vietnam should see this flick, it's the only Vietnam movie that won't leave a bad taste in their mouths. Many fine performances, amazing jungle photography. Fave quote; "You stay here - you learn!"