Overview
General Robert E. Lee targeted Harpers Ferry after his Army of Northern Virginia crossed the Potomac River into Maryland during his Maryland Campaign. Union garrisons at Martinsburg and Harpers Ferry threatened Lee’s supply lines through the Shenandoah Valley. Lee hoped Union officials would abandon both posts, but General-in-Chief Henry Halleck ordered Colonel Dixon S. Miles to hold Harpers Ferry.
Lee divided his army and assigned General Thomas “Stonewall” Jackson overall command of the operation to drive the Federals away. On September 10, Confederate forces moved toward the Union positions. General John G. Walker headed toward Loudoun Heights, Jackson moved toward Martinsburg, and General Lafayette McLaws advanced toward Maryland Heights.
By September 11, Jackson had approached Martinsburg with a much larger force than Union General Julius White commanded. White responded by abandoning Martinsburg and moving his soldiers to Harpers Ferry, where he placed them under Miles. Confederate troops occupied Martinsburg without opposition while fighting took place on Maryland Heights.
On September 13, Confederate attacks forced Union troops from Maryland Heights. Afterward, Walker occupied Loudoun Heights without resistance, while Jackson approached Harpers Ferry from the west. These movements placed Confederate forces on the high ground surrounding the Union garrison.
On September 14, Confederate artillery on Maryland Heights and Loudoun Heights bombarded Harpers Ferry and the Union defenses on Bolivar Heights. Jackson also sent General A.P. Hill’s infantry around the southern end of the Union position, completely encircling the Federals.
On September 15, Jackson ordered his artillery to fire from several directions and prepared an infantry assault. Miles decided that further resistance was hopeless and prepared to surrender. A Confederate shell mortally wounded him before General Julius White assumed command and completed the surrender.
Jackson captured nearly 12,500 Union prisoners, more than 70 cannons, 200 wagons, and roughly 13,000 small arms. The victory became the largest Union surrender of the Civil War and encouraged Lee to continue the Maryland Campaign.
Essential Facts
- Date: September 12–15, 1862.
- Location: Jefferson County, West Virginia, Loudoun County, Virginia, and Washington County, Maryland.
- Participants: United States of America (USA) and Confederate States of America (CSA).
- USA Commanders: Julius White and Dixon S. Miles.
- CSA Commanders: Thomas “Stonewall” Jackson, Lafayette McLaws, and John G. Walker.
- Who Won: The Confederate States of America won the Battle of Harpers Ferry.
- Part Of: Maryland Campaign (1862).
- Era: Civil War (July–December 1862).
Key Details
- The commander of the Union garrison at Harpers Ferry, Colonel Dixon S. Miles, was mortally wounded by a Confederate shell just after deciding to surrender.
- General Julius White surrendered the Union garrison at Harpers Ferry to Confederate General Thomas “Stonewall” Jackson on September 15, 1862.
- Jackson’s victory at Harpers Ferry was one of the greatest of his storied career and resulted in the largest surrender of Union soldiers during the war.
- Jackson’s victory convinced General Robert E. Lee to continue his Maryland Campaign. Two days later, Lee’s decision led to the bloodiest single day of battle during the Civil War on September 17, 1862, along the banks of Antietam Creek near Sharpsburg.
- The Battle of Harpers Ferry was the largest engagement of the Civil War fought in present-day West Virginia.
Statistics
United States of America
- Casualties: 12,636 (44 killed, 173 wounded, and 12,419 captured).
- Forces Engaged: Harpers Ferry Garrison and Martinsburg Garrison.
- Troop Strength: Roughly 14,000.
Confederate States of America
- Casualties: 286 (39 killed and 247 wounded).
- Forces Engaged: Army of Northern Virginia Detachment.
- Troop Strength: Roughly 21,000–26,000.
Significance
The Battle of Harpers Ferry is important to American History because it resulted in the largest Union surrender of the Civil War. General Thomas “Stonewall” Jackson captured nearly 12,500 Union prisoners, more than 70 cannons, 200 wagons, and roughly 13,000 small arms. The victory also protected Confederate supply lines through the Shenandoah Valley and convinced General Robert E. Lee to continue his Maryland Campaign. After the surrender, Jackson moved most of his troops toward Sharpsburg, while General A.P. Hill’s division later arrived in time to support Lee’s army during the Battle of Antietam.
History
Lee Heads North
Encouraged by the Confederate victory at the Second Battle of Bull Run (August 28–30, 1862), Confederate General Robert E. Lee and President Jefferson Davis took the war to Northern soil in the late summer of 1862. On September 4, the Army of Northern Virginia (CSA) started crossing the Potomac River from west to east near Poolesville, Maryland, and Lee’s First Invasion of the North was underway.
Beyond Lee’s military goals, economic and political motives inspired the invasion. The Southern armies needed provisions. Taking the war north would allow Virginia farmers to harvest their crops, unmolested by Union troops. In addition, the invasion would enable Southern troops to commandeer supplies from Northern farmers. Lee also hoped that giving Northerners a taste of war would diminish their resolve, bolstering the prospects of Peace Democrats in the upcoming 1862 Congressional elections. Finally, a victory on Northern soil might convince European powers to lend support to the South.
Lee Divides His Army
Upon entering Maryland, Lee proceeded to Frederick, where he rested his men and met with his generals to devise a campaign plan. By September 9, Lee drafted Special Order Number 191, which outlined his course of action. Assuming that the federal forces near Washington were still in disarray following their stinging defeat at the Second Battle of Bull Run, Lee believed it was safe to temporarily divide his army.
Lincoln Turns to McClellan
Lee’s beliefs were justified. The federal armies around Washington were in disarray. Sensing the vulnerability of the nation’s capital, President Abraham Lincoln reluctantly turned to Major General George B. McClellan to reinvigorate the federal forces to stop Lee’s advance. On September 2, 1862, Lincoln placed McClellan in command of “the fortifications of Washington, and all the troops for the defense of the capital.” Known for his organizational skills, McClellan merged the Army of Virginia (USA) with his Army of the Potomac (USA) and quickly transformed the demoralized Union soldiers into a formidable force.
Martinsburg and Harpers Ferry Garrisons
Lee’s first order of business, as outlined in Special Order Number 191 (Lee’s Lost Order), was capturing the federal garrisons to his west at Martinsburg and Harpers Ferry, Virginia (now West Virginia).
- Brigadier General Julius White commanded the garrison of roughly 2,500 soldiers at Martinsburg.
- Colonel Dixon S. Miles commanded the garrison of about 10,000 soldiers at Harpers Ferry.
Because the two garrisons threatened Lee’s supply lines through the Shenandoah Valley, he decided that he had to dispose of them to prevent his army from being isolated in Maryland. Lee had hoped that the presence of his army in Maryland might prompt federal officials to abandon the garrisons.
McClellan nearly played into Lee’s hands when he proposed abandoning both posts and moving the garrisoned soldiers east to join his main force. Union General-in-Chief Henry Halleck, however, dashed Lee’s hopes when he overruled McClellan and informed Miles on September 7 that “It is important that Harpers Ferry be held to the latest moment.” Halleck’s decision paid off because it forced Lee to redirect valuable time and resources away from his primary objectives.
Geography
Harpers Ferry sits at the confluence of the Potomac River and Shenandoah River and is surrounded by high ground on three sides, which makes the town vulnerable to attack.
- Maryland Heights lies to the north across the Potomac River, which flows toward the Atlantic Ocean from the northeast.
- Loudoun Heights lies to the south across the Shenandoah River, which joins the Potomac from a southeasterly direction.
- Bolivar Heights overlooks the town from the west.
September 10 — Operations Begin at Harpers Ferry
The operation against the garrisons at Martinsburg and Harpers Ferry got underway on Wednesday, September 10, under the overall command of Major General Thomas “Stonewall” Jackson. Brigadier General John G. Walker’s Division of roughly 3,400 soldiers headed west out of Frederick with orders to occupy Loudoun Heights. At 3 a.m. the next morning, Jackson marched 14,000 men northwest from Frederick with ambitions to recross the Potomac River at Williamsport, subdue the garrison at Martinsburg, and then circle around to attack Harpers Ferry from the west. Later that morning, Major General Lafayette McLaws and 8,000 soldiers followed Jackson along the National Road with orders to capture Maryland Heights.
September 11 — Union Forces Withdraw to Harpers Ferry
By the evening of Thursday, September 11, Jackson was within four miles of Martinsburg. Faced with Jackson’s superior numbers, White opted to abandon Martinsburg and withdraw to Harpers Ferry, where he placed his troops under the command of Miles. The next day, Jackson’s troops marched into Martinsburg, unopposed. Meanwhile, on the other side of the Potomac, skirmishing erupted between advance elements of McLaws’ soldiers and the 4,600 Union defenders on Maryland Heights.
September 13 — Confederates Occupy the Heights Around Harpers Ferry
On Saturday, September 13, two Confederate assaults drove Union forces off of Maryland Heights and back across the Potomac to Harpers Ferry. On the same day, Walker took possession of Loudoun Heights with no resistance, and Jackson resumed his march toward Harpers Ferry. Realizing his vulnerability, that night Miles sent Captain Charles Russell through the Confederate lines to “try to reach somebody that had ever heard of the United States Army, or any general of the United States Army, or anybody that knew anything about the United States Army, and report the condition of Harpers Ferry.”
September 14 — Confederate Bombardment of Harpers Ferry
Events justified Miles’ concerns. By early morning on Sunday, September 14, Walker and McLaws had artillery batteries in place on Loudoun and Maryland heights. The only place where the Unionists still held sway was Bolivar Heights on the west side of Harpers Ferry, where Miles had positioned most of his command. Holding the higher ground, Miles’s soldiers offered stiff resistance as Jackson’s men approached from the west. That afternoon, however, Miles and McLaws began bombarding the town and the rear of the federal line on Bolivar Heights. After Confederate fire failed to dislodge the Union forces, Jackson sent General A. P. Hill’s infantry on a flanking maneuver to the south during the night that completely entrapped the Union defenders.
September 15 — Union Forces Surrender at Harpers Ferry
The next morning, Jackson ordered an artillery barrage from all directions as he prepared for an infantry assault on Bolivar Heights. Following an early morning council of war, Miles concluded that his situation was hopeless and decided to surrender. Before being able to do so, however, a Confederate shell mortally wounded him. General White assumed command and completed the surrender.
Outcome
Jackson’s victory at Harpers Ferry was one of the greatest of his storied career. At a cost of fewer than forty men killed and 250 wounded, Jackson captured over 70 cannons, 200 wagons, roughly 13,000 small arms, and nearly 12,500 Union prisoners. The federal capitulation at Harpers Ferry was the largest Union surrender of the Civil War.
When Jackson sent word to General Lee that “Harpers Ferry and its garrison are to be surrendered,” Lee decided to stand and fight, rather than abandon his invasion of Maryland. Two days later, Lee’s decision led to the bloodiest single day of battle during the Civil War on September 17, 1862, along the banks of Antietam Creek near Sharpsburg.
Confederate officials pardoned General White and his men after the surrender at Harpers Ferry. Federal officials then arrested White and temporarily relieved him of his command. A court of inquiry later that year exonerated White and restored him to duty. The reputation of the deceased Colonel Miles did not fare as well. The members of the court concluded that “incapacity, amounting to almost imbecility, led to the shameful surrender of this important post.”
Timeline
- 1862, August 28–30 — Confederate forces won the Second Battle of Bull Run, encouraging General Robert E. Lee to launch his Maryland Campaign and invade the North.
- 1862, September 2 — President Abraham Lincoln placed George B. McClellan in command of Washington’s defenses and the troops protecting the capital.
- 1862, September 4 — Robert E. Lee and the Army of Northern Virginia crossed the Potomac River into Maryland.
- 1862, September 7 — Henry Halleck ordered Dixon S. Miles to hold Harpers Ferry.
- 1862, September 9 — Lee drafted Special Order Number 191 and outlined plans that included capturing the Union garrisons at Martinsburg and Harpers Ferry.
- 1862, September 10 — Confederate operations against Martinsburg and Harpers Ferry started under the overall command of Thomas “Stonewall” Jackson.
- 1862, September 11 — Julius White abandoned Martinsburg and withdrew his troops to Harpers Ferry.
- 1862, September 12 — Jackson’s troops occupied Martinsburg without opposition while Confederate and Union forces skirmished near Maryland Heights.
- 1862, September 13 — Confederate forces drove Union troops from Maryland Heights, occupied Loudoun Heights, and tightened their hold around Harpers Ferry.
- 1862, September 14 — Confederate artillery bombarded Harpers Ferry while General A.P. Hill’s infantry maneuvered around the Union position and completed the encirclement.
- 1862, September 15 — Dixon S. Miles decided to surrender after Confederate artillery opened fire from several directions. A Confederate shell mortally wounded Miles, and Julius White completed the surrender.
AP US History
Definition
Battle of Harpers Ferry (1862) — The Battle of Harpers Ferry was fought from September 12–15, 1862, during the Maryland Campaign. General Robert E. Lee ordered Confederate forces to capture the Union garrison, which threatened his supply lines. Confederate troops seized Maryland and Loudoun Heights, surrounded the Union defenders, and bombarded their positions. Colonel Dixon S. Miles decided to surrender but suffered a mortal wound before General Julius White completed the surrender to General Thomas “Stonewall” Jackson.
Alignment
The Battle of Harpers Ferry is part of the following AP US History sections:
