My uncertainty of what had happened to the Army of the Potomac in our absence, and as to where I should find it, made our getting back a problem somewhat difficult of solution, particularly as I knew that reinforcements for Lee had come up from the south to Richmond, and that most likely some of these troops were being held at different points on the route to intercept my column. Therefore I determined to pass the Pamunkey River at the White House, and sent to Fort Monroe for a pontoon-bridge on which to make the crossing. While waiting for the pontoons I ordered Custer to proceed with his brigade to Hanover Station, to destroy the railroad bridge over the South Anna, a little beyond that place; at the same time I sent Gregg and Wilson to Cold Harbor, to demonstrate in the direction of Richmond as far as Mechanicsville, so as to cover Custer's movements. Merritt, with the remaining brigades of his division, holding fast at Baltimore crossroads to await events.
After Gregg and Custer had gone, it was discovered that the railroad bridge over the Pamunkey, near the White House, had been destroyed but partially--the cross-ties and stringers being burned in places only--and that it was practicable to repair it sufficiently to carry us over. In view of this information General Merritt's two brigades were at once put on the duty of reconstructing the bridge. By sending mounted parties through the surrounding country, each man of which would bring in a board or a plank, Merritt soon accumulated enough lumber for the flooring, and in one day the bridge was made practicable. On the 22d Gregg, Wilson, and Custer returned. The latter had gone on his expedition as far as Hanover Station, destroyed some commissary stores there, and burned two trestle bridges over Hanover Creek. This done, he deemed it prudent to retire to Hanovertown. The next morning he again marched to Hanover Station, and there ascertained that a strong force of the enemy, consisting of infantry, cavalry, and artillery, was posted at the South Anna bridges. These troops had gone there from Richmond en route to reinforce Lee. In the face of this impediment Custer's mission could not be executed fully, so he returned to Baltimore crossroads.
The whole command was drawn in by noon of the 22d, and that day it crossed the Pamunkey by Merritt's reconstructed bridge, marching to Ayletts, on the Mattapony River, the same night. Here I learned from citizens, and from prisoners taken during the day by scouting parties sent toward Hanover Court House, that Lee had been, forced from his position near Spottsylvania Court House and compelled to retire to the line of the North Anna. I then determined to rejoin the Army of the Potomac at the earliest moment, which I did by making for Chesterfield Station, where I reported to General Meade on the 24th of May.
Our return to Chesterfield ended the first independent expedition the Cavalry Corps had undertaken since coming under my command, and our success was commended highly by Generals Grant and Meade, both realizing that our operations in the rear of Lee had disconcerted and alarmed that general so much as to aid materially in forcing his retrograde march, and both acknowledged that, by drawing off the enemy's cavalry during the past fortnight, we had enabled them to move the Army of the Potomac and its enormous trains without molestation in the manoeuvres that had carried it to the North Anna.
Then, too, great quantities of provisions and munitions of war had been destroyed--stores that the enemy had accumulated at sub-depots from strained resources and by difficult means; the railroads that connected Lee with Richmond broken, the most successful cavalry leader of the South killed, and in addition to all this there had been inflicted on the Confederate mounted troops the most thorough defeat that had yet befallen them in Virginia.
When the expedition set out the Confederate authorities in Richmond were impressed, and indeed convinced, that my designs contemplated the capture of that city, and notwithstanding the loss they sustained in the defeat and death of Stuart, and their repulse the succeeding day, they drew much comfort from the fact that I had not entered their capital. Some Confederate writers have continued to hold this theory and conviction since the war. In this view they were and are in error. When Stuart was defeated the main purpose of my instructions had been carried out, and my thoughts then turned to joining General Butler to get supplies. I believed that I could do this by cutting across to the Mechanicsville pike and Fair Oaks on the south side of the Chickahominy, but the failure of Wilson's column to get possession of the outwork which commanded the pike necessitated my crossing at Meadow bridge, and then moving by Mechanicsville and Gaines's Mills instead of by the shorter route.
Moreover, my information regarding General Butler's position was incorrect, so that even had I been successful in getting to Fair Oaks by the direct road I should still have gained nothing thereby, for I should still have been obliged to continue down the James River to Haxall's.
