The military campaign led by Alexander the Great is known as his conquest of the Persian Empire, which took place between 334 and 323 BC. Alexander, king of Macedon, launched this campaign to expand his empire and spread Greek culture throughout Asia. Accompanied by his well-trained army, he achieved remarkable victories in battles such as those at Granicus, Issus, and Gaugamela. His relentless pursuit of conquest stretched from Greece through Asia Minor, Egypt, and Persia, ultimately reaching India. Alexander’s campaigns established him as one of history's greatest military commanders and facilitated the Hellenization of vast regions, influencing cultures for centuries.