On this day in 1862, Confederate General Robert E. Lee's Army of Northern Virginia repulses a series of attacks by General Ambrose Burnside's Army of the Potomac at Fredericksburg, Virginia. The defeat was one of the most decisive loses for the Union army, and it dealt a serious blow to Northern morale in the winter of 1862-63.
Burnside assumed command of the Army of the Potomac in November 1862 after George McClellan failed to pursue Lee into Virginia following the Battle of Antietam in Maryland on September 17. Burnside immediately crafted a plan to move against the Confederate capital at Richmond, Virginia. This called for a rapid march by the Federals from their positions in northern Virginia to Fredericksburg on the Rappahannock River. Burnside planned to cross the river at that point and then continue south.
The campaign began promisingly for the Union. The army moved quickly down the Rappahannock, but then stalled across the river from Fredericksburg. Due to poor execution of orders, a pontoon bridge was not in place for several days. The delay allowed Lee to move his troops into place along Marye's Heights above Fredericksburg. The Confederates were secure in a sunken road protected by a stone wall, looking down on the open slopes that stretched from the edge of Fredericksburg. So strong was the Confederate position that one Rebel officer claimed "a chicken could not live on that field when we open on it."
Burnside decided to attack anyway. On December 13, he hurled 14 attacks against the Confederate lines. Although the Union artillery was effective against the Rebels, the 600-yard field was a killing ground for the attacking Yankees. No Union soldiers reached the wall at the top of Marye's Heights, and few even came within 50 yards of it. "It is well that war is so horrible, or else we should grow too fond of it," Lee observed to General James Longstreet as they watched the carnage. A bitterly cold night froze many of the Union dead and wounded.
Burnside considered continuing the attack on December 14, but his subordinates urged him to stop. On December 15, a truce was called for the Union to collect their dead and wounded soldiers. Burnside retreated northward under the cover of darkness and rain. The one-sided nature of the battle was reflected in the casualty figures. The Yankees suffered around 12,650 killed and wounded, while Lee lost only about 4,200 men. General Joseph Hooker replaced Burnside as commander of the Army of the Potomac in January 1863.