It was no light affair to supply an army of one hundred and fifty thousand men, over a single line of railway,—to accumulate supplies in advance of the movement,—to cut loose from his base of operations, and open a new base as occasion should call. Every mile of advance increased Grant's difficulty, while every mile of retrograde movement carried Lee nearer to his base of operations.

All the speculations in regard to Burnside's destination fell to the ground when, on the 25th of April, the Ninth Corps passed through Washington, and moved into Virginia. It was a sublime spectacle. The Ninth Corps achieved almost the first successes of the war in North Carolina. It had hastened to the Potomac in time to aid in rescuing the capital when Lee made his first Northern invasion. It won glory at South Mountain, and made the narrow bridge of Antietam forever historic. It had readied Kentucky in season to aid in driving the Rebels from that State, and now, with recruited ranks,—with new regiments of as good blood as ever was poured out in the cause of right, with a new element which was to make for itself a name never again to be despised, the corps was marching through the capital of the nation, passing in review before Abraham Lincoln. The corps marched down Fourteenth Street past Willard's Hotel, where upon the balcony stood the President and General Burnside. Behold the scene! Platoons, companies, battalions, regiments, brigades, and divisions. The men are bronzed by the rays of a Southern sun, and by the March winds. The bright sunshine gleams from their bayonets; above them wave their standards, tattered by the winds, torn by cannon-ball and rifle-shot,—stained with the blood of dying heroes. They are priceless treasures, more beloved than houses, land, riches, honor, ease, comfort, wife or children. Ask them what is most dear of all earthly things, there will be but one answer,—"The flag! the dear old flag!" It is their pillar of fire by night, of cloud by day,—the symbol of everything worth living for, worth dying for!

Their banners bear the names of Bull Run, Ball's Bluff, Roanoke, Newburn, Gains's Mills, Mechanicsville, Seven Pines, Savage Station, Glendale, Malvern, Fredericksburg, Chancellorsville, Antietam, South Mountain, Knoxville, Vicksburg, Port Hudson, Gettysburg, inscribed in golden characters.

The people of Washington have turned out to see them. Senators have left their Chamber, and the House of Representatives has taken a recess to gaze upon the defenders of their country, as they pass through the city,—many of them, alas! never to return.

There is the steady tramping of the thousands,—the deep, heavy jar of the gun-carriages,—the clattering of hoofs, the clanking of sabres, the drum-beat, the bugle-call, and the music of the bands. Pavement, sidewalk, windows, and roofs are occupied by the people. A division of veterans pass, saluting the President and their commander with cheers. And now with full ranks, platoons extending from sidewalk to sidewalk, are brigades which never have been in battle, for the first time shouldering arms for their country; who till a year ago never had a country, who even now are not American citizens, who are disfranchised,—yet they are going out to fight for the flag! Their country was given them by the tall, pale, benevolent-hearted man standing upon the balcony. For the first time they behold their benefactor. They are darker hued than their veteran comrades; but they can cheer as lustily, "Hurrah! Hurrah!" "Hurrah for Massa Linkum!" "Three cheers for the President!" They swing their caps, clap their hands, and shout their joy. Long, loud, and jubilant are the rejoicings of those redeemed sons of Africa. Regiment after regiment of stalwart men,—slaves once, but freemen now,—with steady step and even rank, pass down the street, moving on to the Old Dominion.

It was the first review of colored troops by the President. He gave them freedom, he recognized them as soldiers. Their brethren in arms of the same complexion had been murdered in cold blood, after surrender, at Port Pillow and at Plymouth. And such would be their fate should they by chance become prisoners of war.

The time had come for the great movement.

On Tuesday afternoon, May 3d, the cavalry broke camp on the Orange and Alexandria Railroad, and moved eastward,—General Gregg's division towards Ely's Ford, and General Wilson's division towards Germanna Ford, each having pontoons. At midnight the Second Corps, which had been encamped east of Culpepper, followed General Gregg. At daylight on the morning of the 4th of May, the Fifth and Sixth Corps and the reserve artillery were moving towards Germanna Ford. The supply-train—four thousand wagons—followed the Second Corps. There were but these two available roads.

The enemy was at Orange Court-House, watching, from his elevated lookout on Clark's Mountain, for the first sign of change in the Union camp. In the light of the early dawn he saw that the encampments at Culpepper were broken up, while the dust-cloud hanging over the forest toward the east was the sure indication of the movement.

General Lee put his army in instant motion to strike the advancing columns as they crossed the Rapidan. The movement of Grant was southeast, that of Lee northeast,—lines of advance which must produce collision, unless Grant was far enough forward to slip by the angle. There is reason to believe that General Grant did not intend to fight Lee at Wilderness, but that it was his design to slip past that point and swing round by Spottsylvania, and, if possible, get between Lee and Richmond. He boldly cut loose his connection with Washington, and plunged into the Wilderness, relying upon the ability of his soldiers to open a new base for supplies whenever needed.