The Battle of Williamsburg, also known as the Battle of Fort Magruder, took place on May 5, 1862, in York County, James City County, and Williamsburg, Virginia, as part of the Peninsula Campaign of the American Civil War. It was the first pitched battle of the Peninsula Campaign, in which nearly 41,000 Federals and 32,000 Confederates were engaged, fighting an inconclusive battle that ended with the Confederates continuing their withdrawal.
Following up the Confederate retreat from Yorktown, the Union division of Brig. Gen. Joseph Hooker encountered the Confederate rearguard near Williamsburg. Hooker assaulted Fort Magruder, an earthen fortification alongside the Williamsburg Road, but was repulsed. Confederate counterattacks, directed by Maj. Gen. James Longstreet, threatened to overwhelm the Union left flank, until Brig. Gen. Philip Kearny's division arrived to stabilize the Federal position. Brig. Gen. Winfield S. Hancock's brigade then moved to threaten the Confederate left flank, occupying two abandoned redoubts. The Confederates counterattacked unsuccessfully. Hancock's localized success was not exploited. The Confederate army continued its withdrawal during the night in the direction of Richmond, Virginia.
When Confederate General Joseph E. Johnston unexpectedly withdrew his forces from the Warwick Line at the Siege of Yorktown the night of May 3, Union Maj. Gen. George B. McClellan was taken by surprise and was unprepared to mount an immediate pursuit. On May 4, he ordered cavalry commander Brig. Gen. George Stoneman to pursue Johnston's rearguard and sent approximately half of his Army of the Potomac along behind Stoneman, under the command of Brig. Gen. Edwin V. Sumner. He also ordered Brig. Gen. William B. Franklin's division to board transport ships on the York River in an attempt to move upstream and land so as to cut off Johnston's retreat. However, it took two days just to board the men and equipment onto the ships, so the maneuver had no effect on the battle of May 5; Franklin's division landed and fought in the Battle of Eltham's Landing on May 7.
By May 5, Johnston's army was making slow progress on muddy roads and Stoneman's cavalry was skirmishing with Brig. Gen. J.E.B. Stuart's cavalry, Johnston's rearguard. To give time for the bulk of his army to get free, Johnston detached part of his force to make a stand at a large earthen fortification, Fort Magruder, straddling the Williamsburg Road (from Yorktown), constructed earlier by Brig. Gen. John B. Magruder.
Brig. Gen. Joseph Hooker's 2nd division of the III Corps was the lead infantry in the Union Army advance. It assaulted Fort Magruder and a line of rifle pits and smaller fortifications that extended in an arc south-west from the fort, but was repulsed. Confederate counterattacks, directed by Maj. Gen. James Longstreet, threatened to overwhelm Hooker's division, which had contested the ground alone since the early morning while waiting for the main body of the army to arrive. Hooker had expected Brig. Gen. William F. "Baldy" Smith's 2nd Division of the IV Corps, marching north on the Yorktown Road, to hear the sound of battle and come in on Hooker's right in support. However, Smith had been halted by Sumner more than a mile away from Hooker's position. He had been concerned that the Confederates would leave their fortifications and attack him on the Yorktown Road.
The American Civil War (1861–1865) was the deadliest conflict in American history, killing an estimated 620,000 to 750,000 soldiers and an unknown number of civilians. The Confederate States of America, formed by eleven seceding Southern states, faced the Union in four years of warfare across 23 states and territories. Major engagements included First and Second Bull Run, Antietam (the bloodiest single day in American history, September 17, 1862), Chancellorsville, Gettysburg (July 1–3, 1863), Vicksburg (surrendered July 4, 1863), and Sherman's March through Georgia and the Carolinas (1864–1865). President Lincoln issued the Emancipation Proclamation on January 1, 1863, transforming the war's stated purpose to include the abolition of slavery and enabling the enlistment of approximately 180,000 Black men in the United States Colored Troops. Confederate General Robert E. Lee surrendered to Ulysses S. Grant at Appomattox Court House on April 9, 1865. The war resolved the question of secession and ended American slavery, though Reconstruction would face sustained resistance in its attempt to secure civil rights for formerly enslaved people.
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