...nications with the deep water from an advance down the New Market road, which he had good reason to fear. The remainder of his great army was massed on Monday midway between the White Oak Swamp and Malvern Hill , under Generals Heintzelman and McCall, to watch the roads going eastward; by which the Confederates might insinuate themselves between his right and left, and pursue his baggage trains. These judi...