There is a really good book about Thermopylae called “Gates of Fire” by Steven Pressfield. Really great read- full of action and history. I totally reccomend it to anyone who loves Gree History.
Pressfield has written alot of books about ancient Greece- he wrote one about Alexander the Great, some about hte Peloponesian War, and another about Amazonian women. Check them all out.
Anyways this movie will kick ass.