...ral advance of the whole army towards the Susquehannah on the east side of the mountain range, which advance was to be put in motion early on the morning of the 29th. Of this change of arrangement, General Lee had no intimation until the two armies came into collision near Gettysburg. Had he known that General Meade had withdrawn the corps from Middleton on the 28th, as he should have known if his cavalr...