Battle of Fredericksburg - Background and Burnside's Plan

Background and Burnside's Plan

In November 1862, President Abraham Lincoln needed to demonstrate the success of the Union war effort before the Northern public lost confidence in his administration. Confederate armies had been on the move earlier in the fall, invading Kentucky and Maryland, and although each had been turned back, those armies remained intact and capable of further action. Lincoln urged Maj. Gen. Ulysses S. Grant to advance against the Confederate stronghold of Vicksburg, Mississippi. He replaced Maj. Gen. Don Carlos Buell with Maj. Gen. William S. Rosecrans, hoping for a more aggressive posture against the Confederates in Tennessee. And on November 5, seeing that his replacement of Buell had not stimulated Maj. Gen. George B. McClellan into action, he issued orders to replace McClellan in command of the Army of the Potomac in Virginia. McClellan had stopped Robert E. Lee at the Battle of Antietam in Maryland, but had not been able to destroy Lee's army, nor did he pursue Lee back into Virginia aggressively enough for Lincoln.

McClellan's replacement was Maj. Gen. Ambrose E. Burnside, the commander of the IX Corps. Burnside had established a reputation as an independent commander, with successful operations earlier that year in coastal North Carolina and, unlike McClellan, had no apparent political ambitions. However, he felt himself unqualified for army-level command and objected when offered the position. He accepted only when it was made clear to him that McClellan would be replaced in any event and that an alternative choice for command was Maj. Gen. Joseph Hooker, whom Burnside disliked and distrusted. Burnside assumed command on November 7.

In response to prodding from Lincoln and general-in-chief Maj. Gen. Henry W. Halleck, Burnside planned a late fall offensive; he communicated his plan to Halleck on November 9. The plan relied on quick movement and deception. He would concentrate his army in a visible fashion near Warrenton, feigning a movement on Culpeper Court House, Orange Court House, or Gordonsville. Then he would rapidly shift his army southeast and cross the Rappahannock River to Fredericksburg, hoping that Robert E. Lee would sit still, unclear as to Burnside's intentions, while the Union Army made a rapid movement against Richmond, south along the Richmond, Fredericksburg and Potomac Railroad from Fredericksburg. Burnside selected this plan because he was concerned that if he were to move directly south from Warrenton, he would be exposed to a flanking attack from Lt. Gen. Thomas J. "Stonewall" Jackson, whose corps was at that time in the Shenandoah Valley south of Winchester. He also believed that the Orange and Alexandria Railroad would be an inadequate supply line. (Burnside was also influenced by plans McClellan began developing just prior to being relieved. Aware that Lee had blocked the O&A, McClellan considered a route through Fredericksburg and ordered a small group of cavalrymen commanded by Capt. Ulric Dahlgren to investigate the condition of the RF&P.) While Burnside began assembling a supply base at Falmouth, near Fredericksburg, the Lincoln administration entertained a lengthy debate about the wisdom of his plan, which differed from the president's preference of a movement south on the O&A and a direct confrontation with Lee's army instead of the movement focused on the city of Richmond. Lincoln reluctantly approved the plan on November 14 but cautioned his general to move with great speed, certainly doubting that Lee would cooperate as Burnside anticipated.