As a reinforcement to the Army of the Potomac, or to act in support of it, the 9th army corps, over twenty thousand strong, under General Burnside, had been rendezvoused at Annapolis, Maryland. This was an admirable position for such a reinforcement. The corps could be brought at the last moment as a reinforcement to the Army of the Potomac, or it could be thrown on the sea-coast, south of Norfolk, in Virginia or North Carolina, to operate against Richmond from that direction. In fact Burnside and the War Department both thought the 9th corps was intended for such an expedition up to the last moment.
My general plan now was to concentrate all the force possible against the Confederate armies in the field. There were but two such, as we have seen, east of the Mississippi River and facing north. The Army of Northern Virginia, General Robert E. Lee commanding, was on the south bank of the Rapidan, confronting the Army of the Potomac; the second, under General Joseph E.
Johnston, was at Dalton, Georgia, opposed to Sherman who was still at Chattanooga. Beside these main armies the Confederates had to guard the Shenandoah Valley, a great storehouse to feed their armies from, and their line of communications from Richmond to Tennessee. Forrest, a brave and intrepid cavalry general, was in the West with a large force; making a larger command necessary to hold what we had gained in Middle and West Tennessee. We could not abandon any territory north of the line held by the enemy because it would lay the Northern States open to invasion. But as the Army of the Potomac was the principal garrison for the protection of Washington even while it was moving on Lee, so all the forces to the west, and the Army of the James, guarded their special trusts when advancing them from as well as when remaining at them. Better indeed, for they forced the enemy to guard his own lines and resources at a greater distance from ours, and with a greater force. Little expeditions could not so well be sent out to destroy a bridge or tear up a few miles of railroad track, burn a storehouse, or inflict other little annoyances. Accordingly I arranged for a simultaneous movement all along the line. Sherman was to move from Chattanooga, Johnston's army and Atlanta being his objective points.(*23) Crook, commanding in West Virginia, was to move from the mouth of the Gauley River with a cavalry force and some artillery, the Virginia and Tennessee Railroad to be his objective. Either the enemy would have to keep a large force to protect their communications, or see them destroyed and a large amount of forage and provision, which they so much needed, fall into our hands. Sigel was in command in the Valley of Virginia. He was to advance up the valley, covering the North from an invasion through that channel as well while advancing as by remaining near Harper's Ferry. Every mile he advanced also gave us possession of stores on which Lee relied. Butler was to advance by the James River, having Richmond and Petersburg as his objective.
Before the advance commenced I visited Butler at Fort Monroe.
This was the first time I had ever met him. Before giving him any order as to the part he was to play in the approaching campaign I invited his views. They were very much such as I intended to direct, and as I did direct (*24), in writing, before leaving.
General W. F. Smith, who had been promoted to the rank of major-general shortly after the battle of Chattanooga on my recommendation, had not yet been confirmed. I found a decided prejudice against his confirmation by a majority of the Senate, but I insisted that his services had been such that he should be rewarded. My wishes were now reluctantly complied with, and I assigned him to the command of one of the corps under General Butler. I was not long in finding out that the objections to Smith's promotion were well founded.
In one of my early interviews with the President I expressed my dissatisfaction with the little that had been accomplished by the cavalry so far in the war, and the belief that it was capable of accomplishing much more than it had done if under a thorough leader. I said I wanted the very best man in the army for that command. Halleck was present and spoke up, saying:
"How would Sheridan do?" I replied: "The very man I want."
The President said I could have anybody I wanted. Sheridan was telegraphed for that day, and on his arrival was assigned to the command of the cavalry corps with the Army of the Potomac. This relieved General Alfred Pleasonton. It was not a reflection on that officer, however, for I did not know but that he had been as efficient as any other cavalry commander.
Banks in the Department of the Gulf was ordered to assemble all the troops he had at New Orleans in time to join in the general move, Mobile to be his objective.
At this time I was not entirely decided as to whether I should move the Army of the Potomac by the right flank of the enemy, or by his left. Each plan presented advantages. (*25) If by his right--my left--the Potomac, Chesapeake Bay and tributaries would furnish us an easy hauling distance of every position the army could occupy from the Rapidan to the James River. But Lee could, if he chose, detach or move his whole army north on a line rather interior to the one I would have to take in following. A movement by his left--our right--would obviate this; but all that was done would have to be done with the supplies and ammunition we started with. All idea of adopting this latter plan was abandoned when he limited quantity of supplies possible to take with us was considered. The country over which we would have to pass was so exhausted of all food or forage that we would be obliged to carry everything with us.