Second Manassas
Second Bull Run, Brawner's Farm
Prince William and Fairfax Counties, VA | Aug 28 - 30, 1862
At Second Manassas, Gen. Robert E. Lee鈥檚 Confederate army defeated Union forces under Maj. Gen. John Pope, hastening the Federals鈥 retreat back toward their defenses in Washington and allowing Lee to lead his army across the Potomac River into the North.
How it ended
Confederate victory. The Union was crushed, and the army was driven back to Bull Run. Only an effective Union rearguard action prevented a replay of the First Manassas disaster. Second Manassas proved to be the deciding battle in the Civil War campaign waged between Union and Confederate armies in northern Virginia in 1862.
In context
One year after their stunning victory at the First Battle of Manassas in July 1861, Confederate prospects were uncertain. General Ulysses S. Grant was keeping the Rebels at bay in the West. In the East, Gen. George B. McClellan was threatening the Confederate capital at Richmond with the largest army ever assembled in North America. Three Union forces in the Shenandoah Valley were attempting to move south to support McClellan鈥檚 invasion, but their progress was continually impeded. Frustrated by the failure of those troops to gain ground, President Abraham Lincoln formed the Army of Virginia in June 1862 and appointed Maj. Gen. John Pope to command it.
The Lincoln administration gave Pope the dual task of shielding Washington and operating northwest of Richmond to take pressure off McClellan鈥檚 army. But Pope鈥檚 defeat at Second Manassas was a setback. This second loss for the Union near the battlefield at Bull Run resulted in Pope鈥檚 dismissal from command and Lee鈥檚 march northward.
To counter Pope鈥檚 movement into central Virginia, Gen. Robert E. Lee sends Gen. Thomas J. 鈥淪tonewall鈥 Jackson to Gordonsville on July 13. Jackson鈥檚 force crosses the Rapidan River and clashes with the vanguard of Pope鈥檚 army at Cedar Mountain, south of Culpeper, on August 9. Jackson鈥檚 narrow tactical victory proves sufficient to instill caution in the Union high command. The initiative shifts to Lee.
Confirming that the remainder of McClellan鈥檚 Army of the Potomac is departing the Virginia Peninsula southeast of Richmond to join forces with Pope in northern Virginia, Lee orders Lt. Gen. James Longstreet鈥檚 wing of the Army of Northern Virginia to join Jackson. Lee intends to destroy Pope before the bulk of McClellan鈥檚 reinforcements can arrive and outman the Confederates. Pope, however, foils Lee鈥檚 plans by withdrawing behind the Rappahannock River on August 19.
To lure Pope away from his defensive positions along the Rappahannock, Lee makes a daring move. On August 25, he sends Jackson on a sweeping flank march around the Union right to gain its rear and sever Pope鈥檚 supply line. At sunset on August 26, Jackson鈥檚 forces complete a remarkable 55-mile march, striking the Orange and Alexandria Railroad at Bristoe Station and subsequently capturing Pope鈥檚 supply depot at Manassas Junction. As Lee had anticipated, Pope abandons the Rappahannock line to pursue Jackson, while Lee circles around to bring up Longstreet鈥檚 half of the Confederate army. After fending off the advance of Pope鈥檚 army near Bristoe, Jackson torches the remaining Union supplies at Manassas Junction and slips away, taking up a position north of Groveton, near the old Bull Run battlefield.
August 28. Alerted that Lee and Longstreet had reached Thoroughfare Gap and would arrive the following day, Jackson strikes a lone Union division on the Warrenton Turnpike, resulting in a fierce engagement at the Brawner Farm that evening.
August 29. Believing that Jackson is attempting to escape, Pope directs his scattered forces to converge on the Confederate position. Throughout the day, Union forces make piecemeal attacks on Jackson鈥檚 line, positioned along an unfinished railroad, while Pope awaits a flanking movement by his subordinate, Maj. Gen. Fitz John Porter. Although the Union assaults pierce Jackson鈥檚 line on several occasions, the attackers are repulsed each time. Late in the morning, Lee arrives on the field with Longstreet鈥檚 command, taking position on Jackson鈥檚 right and blocking Porter鈥檚 advance. Lee hopes to unleash Longstreet on the vulnerable Union left, but Longstreet convinces the Confederate commander to hold off.
August 30. Pope receives conflicting intelligence and weighs his options. Mistakenly convinced that the Confederates are retreating, the Union commander orders a pursuit near midday, but the advance quickly ends when skirmishers encounter Jackson鈥檚 forces still ensconced behind the unfinished railroad. Pope, still undeterred, shifts to a major assault on Jackson鈥檚 line. Porter鈥檚 corps and Brig. Gen. John Hatch鈥檚 division attack Jackson鈥檚 right at the 鈥淒eep Cut,鈥 an excavated section of the railroad grade. However, with ample artillery support, the Confederate defenders repulse the attack.
Lee and Longstreet seize the initiative and launch a massive counterattack against the Union left. Longstreet鈥檚 wing, reinforced by Lee and nearly 30,000 strong, sweep eastward toward Henry Hill, where the Confederates hope to cut off Pope鈥檚 escape. Union forces mount a tenacious defense on Chinn Ridge, which buys time for Pope to shift enough troops onto Henry Hill and stave off disaster. The Union lines on Henry Hill hold as the Confederate counterattack stalls before dusk. After dark, Pope pulls his beaten army off the field and retreats across Bull Run.
14,462
7,387
Despite heavy Confederate casualties, Second Manassas is a decisive victory for the Rebels. Lee pulled off a strategic offensive against an enemy force much greater than his own. On September 5, Lee crosses the Potomac River into western Maryland and heads north. McClellan unites his army with the Army of Virginia and marches northwest to block Lee鈥檚 invasion. On September 17, Lee and McClellan clash in the Battle of Antietam, the costliest single day of fighting in American history.
The Second Battle of Manassas was larger in scale and greatly exceeded the number of casualties than the First Battle of Manassas, which was fought on the same ground in July 1861. So much had changed in a year. At the first battle, when the war was young, both Union and Confederate soldiers marched eagerly and innocently into a conflict they thought would be short and victorious. Neither preconception turned out to be true. The First Battle of Manassas saw more than 5,000 casualties, including nearly 900 dead. The nation was shocked by the carnage. The Union was stunned by the stinging defeat. Lincoln鈥檚 hope for an easy 90-day victory was shattered.
The armies who met at the Second Battle of Manassas in late August 1862 were more experienced. They were battle scarred and hardened. The soldiers had none of the naive enthusiasm shown by their peers in 1861. As the Civil War stretched into its second year, the battles became deadlier and bloodier. The forces were larger, the troops better trained, the officers more prepared, and the tactics more ruthless and proficient. New developments in weaponry made warfare more dangerous, as rifles and artillery could be fired with greater precision. The human toll was greater, with almost 14,000 Union and more than 8,000 Confederate casualties. The exhausted troops showed little remorse toward the enemy. They were numbed by the atrocities they had witnessed.
John Pope鈥檚 ill-fated decisions at Second Manassas had personal consequences. His arrogance before the battle only served to exacerbate the sting of defeat. After he was named commander of the newly formed Army of Virginia on June 26, 1862, he lectured his troops:
This attempt to boost morale only served to insult his corps commanders, who felt his critical words targeted them.
Pope was a well-trained and capable officer. Like many other Civil War generals, he attended the United States Military Academy at West Point and served in the Mexican-American War. Before the Civil War he had a job surveying potential southern routes for the First Transcontinental Railroad. In 1861, he was appointed as a brigadier general in the Union army and had several successes early in the war, leading Lincoln to select him to command the Army of Virginia in 1862.
After Pope鈥檚 failure at Second Manassas, Abraham Lincoln commented, 鈥淧ope did well, but there was an army prejudice against him, and it was necessary he should leave. We had the enemy in our hands on Friday and if our generals, who were vexed with Pope, had done their duty鈥ll of our present difficulties and reverses have been brought upon us by these quarrels of the generals.鈥 So, in addition to losing almost 14,000 men in battle at Second Manassas, Pope lost his command of the Army of Virginia as well as his reputation. He was sent to the Army's Department of the Northwest for the remainder of the Civil War.
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