Overview: Alexander the Great's astonishing military campaign against the Persian Empire is brought to life with animated maps, images from Osprey Publishing and Total War game footage. In Part 2, Alexander cuts the Gordian Knot, then defeats the army of Darius III at the Battle of Issus. He goes on to conquer the island-city of Tyre in a brutal siege, and seizes control of the rich and ancient land of Egypt, where he is recognised as the new pharaoh. He founds a new city at Alexandria, and at the oracle of Siwah, he is welcomed as son of Amun - king of the gods. King Agis of Sparta leads a rebellion against Macedonian rule back in Greece, but is crushed by Antipater, leaving Alexander free to continue his advance into the heartlands of Persia...