
The Peninsula campaign of the American Civil War was a major Union operation launched in southeastern Virginia from March through July 1862, the first large-scale offensive in the Eastern Theater. The operation, commanded by Maj. Gen. George B. McClellan, was an amphibious turning movement against the Confederate States Army in Northern Virginia, intended to capture the Confederate capital of Richmond. McClellan was initially successful against the equally cautious General Joseph E. Johnston, but the emergence of the more aggressive General Robert E. Lee turned the subsequent Seven Days Battles into a humiliating Union defeat.

The Battle of Drewry's Bluff, also known as the Battle of Fort Darling, or Fort Drewry, took place on May 15, 1862, in Chesterfield County, Virginia, as part of the Peninsula Campaign of the American Civil War. Four Union Navy warships, including the ironclads USS Monitor and Galena, and the United States Revenue Cutter Service's ironclad USRC Naugatuck steamed up the James River to test the defenses of Richmond, Virginia, the Confederate capital. They encountered submerged obstacles, and deadly accurate fire from the batteries of Fort Darling at Drewry's Bluff, which inflicted severe damage on Galena, forcing them to turn back.

The Battle of Eltham's Landing, also known as the Battle of Barhamsville, or West Point, took place on May 7, 1862, in New Kent County, Virginia, as part of the Peninsula Campaign of the American Civil War. Brig. Gen. William B. Franklin's Union division landed at Eltham's Landing and was attacked by two brigades of Brig. Gen. G. W. Smith's command, reacting to the threat to the Confederate army's trains on the Barhamsville Road. Franklin's movement occurred while the Confederate army was withdrawing from the Williamsburg line, but he was unable to interfere with the Confederate movement.

The Battle of Gaines' Mill, sometimes known as the Battle of Chickahominy River, took place on June 27, 1862, in Hanover County, Virginia, as the third of the Seven Days Battles of the American Civil War. Following the inconclusive Battle of Beaver Dam Creek (Mechanicsville) the previous day, Confederate General Robert E. Lee renewed his attacks against the right flank of the Union Army, relatively isolated on the northern side of the Chickahominy River. There, Brig. Gen. Fitz John Porter's V Corps had established a strong defensive line behind Boatswain's Swamp. Lee's force was destined to launch the largest Confederate attack of the war, about 57,000 men in six divisions. Porter's reinforced V Corps held fast for the afternoon as the Confederates attacked in a disjointed manner, first with the division of Maj. Gen. A.P. Hill, then Maj. Gen. Richard S. Ewell, suffering heavy casualties. The arrival of Maj. Gen. Stonewall Jackson's command was delayed, preventing the full concentration of Confederate force before Porter received some reinforcements from the VI Corps.

The Battle of Glendale, also known as the Battle of Frayser's Farm, Frazier's Farm, Nelson's Farm, Charles City Crossroads, New Market Road, or Riddell's Shop, took place on June 30, 1862, in Henrico County, Virginia, on the sixth day of the Seven Days Battles of the American Civil War.

The Battle of Hampton Roads, also referred to as the Battle of the Monitor and Merrimack or the Battle of Ironclads, was a naval battle during the American Civil War.

The Battle of Hanover Court House, also known as the Battle of Slash Church, took place on May 27, 1862, in Hanover County, Virginia, as part of the Peninsula Campaign of the American Civil War.

The Battle of Malvern Hill, also known as the Battle of Poindexter's Farm, was fought on July 1, 1862, between the Confederate Army of Northern Virginia, led by Gen. Robert E. Lee, and the Union Army of the Potomac under Maj. Gen. George B. McClellan. It was the final battle of the Seven Days Battles during the American Civil War, taking place on a 130-foot (40 m) elevation of land known as Malvern Hill, near the Confederate capital of Richmond, Virginia and just one mile (1.6 km) from the James River. Including inactive reserves, more than fifty thousand soldiers from each side took part, using more than two hundred pieces of artillery and three warships.

The Battle of Oak Grove, also known as the Battle of French's Field or King's School House, took place on June 25, 1862, in Henrico County, Virginia, the first of the Seven Days Battles of the American Civil War. Maj. Gen. George B. McClellan advanced his lines with the objective of bringing Richmond within range of his siege guns. Two Union divisions of the III Corps attacked across the headwaters of White Oak Swamp, but were repulsed by Maj. Gen. Benjamin Huger's Confederate division. McClellan, who was 3 miles (4.8 km) in the rear, initially telegraphed to call off the attack, but ordered another attack over the same ground when he arrived at the front. Darkness halted the fighting. Union troops gained only 600 yards (550 m), at a cost of over a thousand casualties on both sides.

The Battle of Savage's Station took place on June 29, 1862, in Henrico County, Virginia, as the fourth of the Seven Days Battles of the American Civil War. The main body of the Union Army of the Potomac began a general withdrawal toward the James River. Confederate Brig. Gen. John B. Magruder pursued along the railroad and the Williamsburg Road and struck Maj. Gen. Edwin Vose Sumner's II Corps with three brigades near Savage's Station, while Maj. Gen. Thomas J. "Stonewall" Jackson's divisions were stalled north of the Chickahominy River. Union forces continued to withdraw across White Oak Swamp, abandoning supplies and more than 2,500 wounded soldiers in a field hospital.

The Seven Days Battles were a series of seven battles over seven days from June 25 to July 1, 1862, near Richmond, Virginia, during the American Civil War. Confederate General Robert E. Lee drove the invading Union Army of the Potomac, commanded by Maj. Gen. George B. McClellan, away from Richmond and into a retreat down the Virginia Peninsula. The series of battles is sometimes known erroneously as the Seven Days Campaign, but it was actually the culmination of the Peninsula Campaign, not a separate campaign in its own right.

The Battle of Seven Pines, also known as the Battle of Fair Oaks or Fair Oaks Station, took place on May 31 and June 1, 1862, in Henrico County, Virginia, as part of the Peninsula Campaign of the American Civil War. It was the culmination of an offensive up the Virginia Peninsula by Union Maj. Gen. George B. McClellan, in which the Army of the Potomac reached the outskirts of Richmond.

The Battle of White Oak Swamp took place on June 30, 1862, in Henrico County, Virginia, as part of the Seven Days Battles of the American Civil War. As the Union Army of the Potomac retreated southeast toward the James River, its rearguard under Maj. Gen. William B. Franklin stopped Maj. Gen. Thomas J. "Stonewall" Jackson's divisions at the White Oak Bridge crossing, resulting in an artillery duel, while the main Battle of Glendale raged two miles (3 km) farther south around Frayser's Farm. White Oak Swamp is generally considered to be part of the larger Glendale engagement. Because of this resistance from Brig. Gen. William B. Franklin's VI Corps, Jackson was prevented from joining the consolidated assault on the Union Army at Glendale that had been ordered by General Robert E. Lee, producing an inconclusive result, but one in which the Union Army avoided destruction and was able to assume a strong defensive position at Malvern Hill.

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.

The Battle of Yorktown or Siege of Yorktown was fought from April 5 to May 4, 1862, as part of the Peninsula Campaign of the American Civil War. Marching from Fort Monroe, Union Maj. Gen. George B. McClellan's Army of the Potomac encountered Maj. Gen. John B. Magruder's small Confederate force at Yorktown behind the Warwick Line. McClellan suspended his march up the Peninsula toward Richmond and settled in for siege operations.