Peninsula campaign
The Peninsula campaign of 1862 is remembered as the moment the American Civil War's Eastern Theater truly opened. Major General George B. McClellan set out to end the war in one audacious stroke: transport an entire army by sea, land it on the Virginia Peninsula, and march straight to the Confederate capital of Richmond. He moved 121,500 men, 44 artillery batteries, 1,150 wagons, and over 15,000 horses in an armada that an English observer called "the stride of a giant." What followed was neither a swift victory nor a clean defeat. It was something more tangled: a campaign shaped by caution on both sides, by a spy who already held Union battle plans, by a thunderstorm that collapsed bridges, by a general wounded at dusk, and by another general whose arrival changed everything. The questions this story raises are worth sitting with. Why did the side with more men and more artillery end up retreating? And how did one Confederate officer's injury on the 31st of May transform the whole character of the war in the East?
On the 20th of August 1861, McClellan formed the Army of the Potomac and immediately set to reshaping it. He built 48 forts and strong points around Washington, manned by 7,200 artillerists operating 480 guns. His men adored him. He reviewed them constantly, and they returned that attention with what sources describe as genuine adulation.
By November 1 he was general-in-chief of all Union armies, a dual role that even Lincoln worried was too much. McClellan's famous response was "I can do it all." On the 12th of January 1862, he revealed a plan to ship his army to Urbanna, Virginia, on the Rappahannock River, outflanking Confederate forces and marching 50 miles overland to Richmond. Lincoln pressed for an overland attack on Confederate positions at Manassas Junction. McClellan replied with a 22-page letter of objection, the first time his plan's details appeared in writing to the president.
Lincoln reluctantly agreed to the ship-borne strategy. Then, on March 9, Confederate General Joseph E. Johnston quietly withdrew from his positions before Washington, rendering the entire Urbanna scheme worthless. Worse, Johnston's men had been deceiving Union scouts for months with Quaker Guns: wooden logs painted to look like cannon from a distance. McClellan retooled his plan to land at Fort Monroe instead. On March 11, Lincoln stripped him of the general-in-chief title, leaving him to command only the Army of the Potomac. McClellan would later describe that change as part of a conspiracy to make the campaign fail.
Before a single Union soldier stepped ashore on the Virginia Peninsula, the war at sea was already rewriting military history. On the 8th of March 1862, the Confederate ironclad CSS Virginia attacked the wooden Union fleet blockading Hampton Roads, sinking the USS Cumberland and the USS Congress. The loss called into question the viability of every wooden warship in the world.
The next day, the USS Monitor arrived and the two iron vessels fought each other to a standstill. The battle was inconclusive, but it earned worldwide attention. Neither ship was seriously damaged; the only real outcome was that Virginia could no longer attack wooden ships and the Monitor kept her from doing so.
For McClellan, the ironclad problem was immediate and practical. With the Virginia still operational, the U.S. Navy could not promise him safe passage on either the James or the York River. His planned amphibious envelopment of Yorktown had to be abandoned. The path narrowed to a direct march up the Peninsula.
The Virginia's end came soon after Union troops occupied Norfolk on May 10. Commodore Josiah Tattnall III found himself without a home port and unable to navigate her deep draft through the shallow upper James River. On May 11, he scuttled her off Craney Island to prevent capture. That single act opened the James River to Federal gunboats, creating a new threat to Richmond that would soon be tested at Drewry's Bluff.
Confederate Brigadier General John B. Magruder had only 11,000 men when the Union Army arrived on the Peninsula. Johnston's main force of 43,000 was still at Culpeper. What Magruder had, instead of numbers, was a talent for theater. He marched one company in circles through a glen to simulate an endless stream of reinforcements. He spread his artillery far apart and had it fire at random intervals. Union scouts reported an army of 100,000 blocking the road.
McClellan, already expecting resistance, chose not to attack. He ordered siege fortifications built and brought up heavy guns. Fifteen batteries with more than 70 heavy weapons were assembled. When fired together, they would have delivered over 7,000 pounds of ordnance with each volley. Johnston, meanwhile, received reinforcements that eventually brought the Confederate strength at Yorktown to 57,000.
On the 16th of April, a probe at Dam No. 1 on the Warwick River led four companies of the 3rd Vermont Infantry to cross the dam and rout the defenders temporarily, before being driven back with casualties, some of the wounded drowning in the shallow pond behind the dam. The episode remained a footnote.
Escaped enslaved people informed McClellan on May 3 that the Confederates were moving their supply wagons toward Richmond. He refused to believe them, convinced that an army he estimated at 120,000 would stay and fight. The next morning, a Union officer ascended in one of Thaddeus Lowe's observation balloons and found empty earthworks. The Confederates had slipped away in the night, and every week of painstaking siege preparation had come to nothing.
Johnston's withdrawal was slow. On May 5, his army was still struggling through muddy roads when Union General Joseph Hooker's division caught up with the Confederate rearguard at Fort Magruder, the earthen fortification straddling the Williamsburg Road. Nearly 41,000 Union and 32,000 Confederate troops became engaged in what became the first pitched battle of the campaign.
Hooker's men assaulted the fort and its connecting rifle pits, were repulsed, and then held on alone through the morning while waiting for support that never came quickly enough. Confederate counterattacks under James Longstreet threatened to collapse Hooker's line. Relief arrived around 2:30 p.m. in the form of Brigadier General Philip Kearny, who rode out in front of his own picket lines to reconnoiter and urged his men forward by waving his saber with his only arm.
On the Union right, Brigadier General Winfield S. Hancock occupied two abandoned Confederate redoubts and began bombarding Longstreet's flank. Confederate Brigadier General Jubal A. Early led two regiments through the woods without proper reconnaissance and emerged directly in front of Hancock's guns rather than on their flank. Early personally led the 24th Virginia Infantry in a futile charge and was wounded by a bullet through the shoulder. D. H. Hill then arrived with another regiment, the 5th North Carolina, and ordered an attack before grasping the situation: Hancock had 3,400 infantrymen and eight artillery pieces; the attackers numbered fewer than 1,200 with no artillery. Hill called the assault off mid-charge, but Hancock counterattacked anyway. McClellan's description of Hancock as "superb" gave the general a nickname he carried for the rest of his career.
Confederate casualties at Williamsburg were 1,682; Union losses were 2,283. Meanwhile, the amphibious operation McClellan had sent up the York River to cut off Johnston's retreat took two full days just to board men and equipment. When Brigadier General William B. Franklin's men finally landed at Eltham's Landing on May 7, they were met by Hood's Texas Brigade and Hampton's Legion under Colonel Wade Hampton. The fight was tactically inconclusive, and Franklin made no further push. Johnston's army continued its withdrawal without serious interruption.
By the end of May, McClellan had 105,000 men facing Richmond and Johnston had 60,000. A thunderstorm on the night of May 30 flooded the Chickahominy River, destroyed most Union bridges, and turned roads into mud. Johnston chose that moment to attack.
His plan was to strike the two Union corps south of the Chickahominy, isolating them from the three corps north of the river. It required precise coordination among multiple columns. Instead, Longstreet either misunderstood or modified his orders without telling Johnston, marching down the Charles City Road before turning onto the Williamsburg Road, colliding with another Confederate column and reducing the attack to a narrow front. General Benjamin Huger was not given a start time and was not even awake when a division marched past his headquarters. Five hours after the battle was scheduled to begin, D. H. Hill grew impatient and sent his brigades forward on his own initiative, at 1 p.m. on May 31.
The Confederate attack hit Brigadier General Silas Casey's division, 6,000 of the least experienced men in the Union line. Casey's position buckled; his men retreated to a second line at Seven Pines. Hill's follow-up assault around 4:40 p.m. collapsed the second line back to the Williamsburg Road. Union reinforcement came unexpectedly from Brigadier General Edwin V. Sumner, who heard the battle from north of the river and on his own initiative sent John Sedgwick's division across the one remaining bridge, the "Grapevine Bridge," which was near collapse. The weight of the crossing troops helped hold it steady. After the last man crossed, the bridge was swept away.
At dusk, Johnston was hit by a Union artillery shell fragment and carried wounded from the field. G. W. Smith assumed command but made a poor impression on President Davis. On June 1, Davis replaced Smith with Robert E. Lee. Combined casualties were over 11,000: Union losses were 5,031, Confederate 6,134. The battle itself was inconclusive. What was not inconclusive was Lee's arrival.
Lee spent the following weeks fortifying Richmond's defenses and extending them south along the James River all the way to a point below Petersburg, a new line stretching roughly 30 miles. To buy time while that work proceeded, he used the same tactic Magruder had used on the Peninsula: making a small force appear larger than it was. He also had Jeb Stuart's cavalry ride completely around the Union army between June 13 and June 15, a raid that was audacious but, in the source's own description, otherwise militarily pointless. What it did accomplish was rattling McClellan.
McClellan, after Seven Pines, had moved all of his army except the V Corps south of the Chickahominy, abandoning the straddled position. He continued planning for a siege but had lost the initiative. Intelligence supplied by detective Allan Pinkerton had convinced him that Johnston's army numbered far more than it actually did, a belief that distorted every decision he made.
The Seven Days Battles ran from June 25 to the 1st of July 1862. Lee launched fierce counterattacks east of Richmond. None of the individual battles were decisive Confederate tactical wins; the Battle of Malvern Hill on July 1 was actually a significant Confederate defeat. But the cumulative effect of Lee's aggression, combined with the unexpected appearance of Stonewall Jackson's force on the Union western flank, broke McClellan's will to continue toward Richmond. He pulled his army back to a base on the James River.
Lincoln eventually ordered the army back to the Washington area to support Major General John Pope's campaign in northern Virginia, which ended at the Second Battle of Bull Run. The Virginia Peninsula remained largely quiet until May 1864, when Major General Benjamin Butler invaded again as part of the Bermuda Hundred campaign, reopening the question of Richmond's vulnerability that McClellan had first raised two years earlier.
Common questions
What was the goal of the Peninsula campaign in 1862?
The Peninsula campaign was a Union operation intended to capture Richmond, the Confederate capital. Major General George B. McClellan transported 121,500 men by sea to Fort Monroe, Virginia, then advanced northwest up the Virginia Peninsula toward the city. The campaign ran from March to July 1862.
Why did McClellan fail to capture Richmond during the Peninsula campaign?
McClellan's advance stalled due to a combination of factors: Magruder's successful deception at Yorktown, faulty intelligence from detective Allan Pinkerton that led McClellan to believe he was outnumbered, the withholding of McDowell's corps for Washington's defense, and Robert E. Lee's aggressive counterattacks in the Seven Days Battles of June 25 to the 1st of July 1862.
How did Robert E. Lee take command during the Peninsula campaign?
General Joseph E. Johnston was wounded by a Union artillery shell fragment at dusk on the 31st of May 1862, during the Battle of Seven Pines. G. W. Smith assumed temporary command but made a poor impression on President Jefferson Davis. On June 1, Davis replaced Smith with Lee as commander of the Army of Northern Virginia.
What role did the CSS Virginia play in the Peninsula campaign?
On the 8th of March 1862, CSS Virginia attacked the Union wooden fleet at Hampton Roads, sinking USS Cumberland and USS Congress. Her continued presence forced McClellan to abandon his planned amphibious envelopment of Yorktown. She was scuttled on May 11 off Craney Island after Union troops occupied Norfolk and she had no home port.
What happened at the Battle of Williamsburg during the Peninsula campaign?
The Battle of Williamsburg on the 5th of May 1862, engaged nearly 41,000 Union and 32,000 Confederate troops. Confederate casualties were 1,682 and Union losses were 2,283. The battle allowed Johnston's army to continue its withdrawal toward Richmond; McClellan called it a "brilliant victory," but the Confederate rearguard had achieved its purpose of buying time.
How did the Battle of Drewry's Bluff stop the Union Navy from reaching Richmond?
On the 15th of May 1862, Commander John Rodgers led a Union naval squadron up the James River toward Richmond. The USS Galena anchored within 600 yards of Fort Darling on Drewry's Bluff and took 45 hits over more than three hours, suffering 14 dead or mortally wounded and 10 injured. The fort, equipped with eight cannons including guns salvaged from CSS Virginia, halted the naval advance just 7 miles short of the Confederate capital.
All sources
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