This stunning High Definition documentary details the military strategies and radical warfare techniques that allowed a twenty-two-year-old king to defeat a superior military force and, in one decisive victory, topple the mighty Persian Empire. Known as the Battle of Gaugamela, it is viewed as one of the greatest military engagements of the ancient world. In 331 BCE, the two most powerful armies in the world met outside a small village in what is now considered to be Northern Iraq. On one side stood Alexander the Great, the young king of Macedon, and his small, but highly trained force. Opposing him was Darius, the king of Persia, and his army of 250,000 warriors. The film reveals how Alexander's innovative military tactics allowed him to prevail against seemingly overwhelming odds to become the master of the known world.