Alexander The Great succeeded his father, Philip II, to the throne of Macedonia at the age of 20. And he also was tutored by Aristotle until the age of 16.
He conquered territories stretching from Greece to Egypt and through present day Turkey, Iran and Pakistan. Combining battlefield successes with kingdom-building strategy, Alexander spent his 13-year reign working to unite East and West through military force and cultural exchange.
In India, Alexander paused his military conquest to have lengthy discussions with the gymnosophists, "naked philosophers" from the Hindu or Jain religious who eschewed human vanity-and clothing.
Alexander the Great's military tactics and strategies are still studied in military academies today. From his first victory at age 18, Alexander gained a reputation of leading his men to battle with impressive speed, allowing smaller forces to reach and break the enemy lines before his foes were ready.