If a biopic or a movie based around a historic event but is inaccurate means a movie sucks, then Stanley Kubrick's 'Full Metal Jacket' is a terrible movie....and if you think this I have nothing further to discuss with you.

This movie is nothing more than a movie version of the comic book '300', which itself is inspired by the events of the Battle of Thermopylae.

Besides, the moment you saw (SPOILER)10 foot and 20 foot tall monsters the movie was over.

ps: I found it hilarious that even Elephants were toppled.