Many people do not realize that it was Leonidas, not only who had denied the Battle of Thermopylae in so unbelievably skillful manner and the Persians inflicted enormous losses. It was thanks to the equally sophisticated tactics and cunning of Themistocles that the course of the battle - at least for a while - went in favor of the Greeks. It was he who persuaded the city-state Athens to step up to be prepared in case of war for the battle at sea the navy.
As for the film itself I needed two attempts to find him really well. Here I liked the soundtrack in any case much better than in the first part and even then I found it outstanding! All in all a movie you my opinion need not be afraid. Have fun watching :)