...he expedition consisted of the Third regiment New York cavalry and a squadron of the Twelfth, and of Mix's men, (cavalry,) and one company of the North-Carolina regiment, and was under the command of Brigadier-General Edward E. Potter , Chief-of-Staff. The bridge over the Tar River, at Rocky Mount, a station on the Wilmington and Weldon Railroad, was completely destroyed. The bridge was three hundred and fifty feet long, and ...