Bannockburn: The Real Bravehearts

England's Kind Edward I just crushed the infamous Scottish braveheart William Wallace and claimed all of Scotland as England territory. But Wallace's death only ignited a flame within the heart of Scottish outlaw Robert the Bruce. Robert gathered his men and waged war against England, capturing every English-held castle in Scotland, except one — Stirling Castle near the Bannock Burn. NGC tells the story of the pivotal campaign at Sterling Castle and how it held the key to Scotland's future. (Source: National Geographic Channel)