Hollywood loves delving into the past - occasionally they even get (some of) it right. Sometimes even when they get it wrong they tell the tale beautifully. And though not accurate, it conveys the essence of the time and the events.
Other times (MOST of the time actually), they get it terribly, terribly wrong. Embarrassingly so. The Patriot springs to mind. And Braveheart for that matter.
Costumes, attitude, events, people - all often mutated beyond belief - and for no good reason. Sometimes the true events are MUCH more entertaining. What is going through their heads? Nothing much it seems.