Engineers.The rapid movement of an army and its supplies wins victories and makes possible the execution of effective strategy. Road-making is no less essential to the success of a soldier than the handling of a musket. The upper photograph shows Major Beers of the Fiftieth New York Engineers, on horseback, directing his battalion at road-making on the south bank of the North Anna River May 24, 1864. A wagon-train of the Fifth Corps is crossing the bridge by Jericho Mills, constructed on the previous day by Captain Van Brocklin's company of the Fiftieth New York Engineers. In the lower photograph Major Beers has apparently ridden away, but the soldiers are still hard at work. The wagon-train continues to stream steadily over the bridge.