...hile Averill was at Martinsburg with a division of cavalry. Berryville is ten miles from Winchester, nearly east, and Martinsburg twenty-two miles nearly north. The crossing of the Opequon on the Berryville road is four or five miles from Winchester. From Berryville there are two good roads via White Post to the Valley Pike at Newtown and Middletown, the last two roads running east of the Opequon. T...