... course of the morning orders came for Longstreet's corps, except Pickett's division, left behind at Chambersburg, to follow on in the same direction, as soon as General Ewell's train, sent back from Carline , should pass — This was an immense train, as long almost as the tail of a comet, and far more ominous of evil. It occupied four hours in passing, and moved so slowly through the Cashtown Gen....