In the last two videos, we described military reforms of Philip II of Macedon and how he changed his infantry, cavalry and siege weapons. Yet, the changes to the Macedonian army were just starting, and his son - Alexander the Great - conducted his own reforms throughout his campaigns. Alexander has built upon the work of his father and created an army that conquered the Achaemenid Empire and beyond. He created and improved some of the deadliest units of Antiquity, among them - the Silver Shields and Royal Agema.