...une, appear to have any accurate knowledge on the subject. The fact was, that on the 17th Jackson commenced a march of his main body to ward Richmond, leaving a brigade of cavalry and a battery at Harrisonburg , to watch the movements of the Nationals in the Valley, and on the 25th he arrived at Ashland, sixteen miles from Richmond, with about thirty-five thousand men, preparatory to a blow on McClellan's r...