Against history's greatest conqueror, one man will stand alone ... When Alexander of Macedon crossed the Hellespont in the spring of 334 BC, he came ravenous for Glory, desperate for the immortality that was his birthright. At the Granicus River, he smashed an army devised by the formidable satraps of Asia Minor. Even so, Alexander's road to conquest was not clear. For among the myriads of the enemy stood the one man Alexander feared:...