The star of the Macedonian king Alexander III only flashed for a brief moment in the horizon of human history, but his fame survived centuries. The unsurpassed commander and conqueror did not lose a single battle, defeated the invincible Persian power and reached India with his army. Alexander the Great's vast empire, which collapsed almost immediately after his death, encompassed a vast array of land, including the territories of modern Egypt, Turkey, Syria, Iran, Afghanistan and Iraq.