... Stuart and Hill were left upon the field. It was four o'clock P. M. when General Kilpatrick, with the main column, reached the crest of the hill overlooking Williamsport, on the Boonsboro pike. General Buford 's command had been engaged with the enemy two or three miles to the left for two or more hours; Major Medill, of the Eighth Illinois, had already fallen mortally wounded. Two pieces of Pennington's...