The Streets of Culpeper, Virginia, in March, 1864. After Grant's arrival, the Army of the Potomac awoke to the activity of the spring campaign. One of the first essentials was to get the vast transport trains in readiness to cross the Rapidan. Wagons were massed by thousands at Culpeper, near where Meade's troops had spent the winter. The work of the teamsters was most arduous; wearied by long night marches--nodding, reins in hand, for lack of sleep--they might at any moment be suddenly attacked in a bold attempt to capture or destroy their precious freight. When the arrangements were completed, each wagon bore the corps badge, division color, and number of the brigade it was to serve. Its contents were also designated, together with the branch of the service for which it was intended. While loaded, the wagons must keep pace with the army movements whenever possible in order to be parked at night near the brigades to which they belonged. [Illustration: THE "GRAND CAMPAIGN" UNDER WAY--THE DAY BEFORE THE BATTLE COPYRIGHT, 1911, PATRIOT PUB. CO.] Pontoon-Bridges at Germanna Ford, on the Rapidan. Here the Sixth Corps under Sedgwick and Warren's Fifth Corps began crossing on the morning of May 4, 1864. The Second Corps, under Hancock, crossed at Ely's Ford, farther to the east. The cavalry, under Sheridan, was in advance. By night the army, with the exception of Burnside's Ninth Corps, was south of the Rapidan, advancing into the Wilderness. The Ninth Corps (a reserve of twenty thousand men) remained temporarily north of the Rappahannock, guarding railway communications. On the wooden pontoon-bridge the rear-guard is crossing while the pontonniers are taking up the canvas bridge beyond. The movement was magnificently managed; Grant believed it to be a complete surprise, as Lee had offered no opposition. That was yet to come. In the baffling fighting of the Wilderness and Spotsylvania Court House, Grant was to lose a third of his superior number, arriving a month later on the James with a dispirited army that had left behind 54,926 comrades in a month. [Illustration: THE TANGLED BATTLEFIELD COPYRIGHT, 1911, REVIEW OF REVIEWS CO.]