...remainder, he attempted to turn its flank north of the Chickahominy. To test the practicability of this grand enterprise, and to explore a way for General Jackson's proposed junction, he had caused General J. E. B. Stuart , of the cavalry to make his famous reconnoissance of the 12th of June; in which that daring officer had marched a detachment of cavalry from north to south around McClellan's whole rear, and had disc...