The Second Battle of Bull Run or Battle of Second Manassas was fought August 28–30, 1862, in Prince William County, Virginia, as part of the American Civil War. It was the culmination of the Northern Virginia Campaign waged by Confederate Gen. Robert E. Lee's Army of Northern Virginia against Union Maj. Gen. John Pope's Army of Virginia, and a battle of much larger scale and numbers than the First Battle of Bull Run fought on July 21, 1861, on the same ground.
The Battle of Antietam, also called the Battle of Sharpsburg, particularly in the Southern United States, took place during the American Civil War on September 17, 1862, between Confederate General Robert E. Lee's Army of Northern Virginia and Union Major General George B. McClellan's Army of the Potomac near Sharpsburg, Maryland, and Antietam Creek. Part of the Maryland Campaign, it was the first field army–level engagement in the Eastern Theater of the American Civil War to take place on Union soil. It remains the bloodiest day in American history, with a tally of 22,727 dead, wounded, or missing on both sides. Although the Union Army suffered heavier casualties than the Confederates, the battle was a major turning point in the Union's favor.
Jackson's Valley campaign, also known as the Shenandoah Valley campaign of 1862, was Confederate Maj. Gen. Thomas J. "Stonewall" Jackson's spring 1862 campaign through the Shenandoah Valley in Virginia during the American Civil War. Employing audacity and rapid, unpredictable movements on interior lines, Jackson's 17,000 men marched 646 miles (1,040 km) in 48 days and won several minor battles as they successfully engaged three Union armies, preventing them from reinforcing the Union offensive against Richmond.
The Battle of Chantilly took place on September 1, 1862, in Fairfax County, Virginia, as the concluding battle of the Northern Virginia Campaign of the American Civil War. Thomas J. "Stonewall" Jackson's corps of the Army of Northern Virginia attempted to cut off the line of retreat of the Union Army of Virginia following the Second Battle of Bull Run but was attacked by two Union divisions. During the ensuing battle, Union division commanders Isaac Stevens and Philip Kearny were both killed, but the Union attack halted Jackson's advance.
The Battle of Harpers Ferry was fought September 12–15, 1862, as part of the Maryland Campaign of the American Civil War. As Confederate Army General Robert E. Lee's Confederate army invaded Maryland, a portion of his army under Major General Thomas J. "Stonewall" Jackson surrounded, bombarded, and captured the Union garrison at Harpers Ferry, Virginia.
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.
The Battle of Beaver Dam Creek, also known as the Battle of Mechanicsville or Ellerson's Mill, took place on June 26, 1862, in Hanover County, Virginia. It was the first major engagement of the Seven Days Battles during the Peninsula Campaign of the American Civil War and the start of Confederate General Robert E. Lee's counter-offensive against the Union Army of the Potomac, under Maj. Gen. George B. McClellan, which threatened the Confederate capital of Richmond.
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 which together decided the outcome of the Union's Peninsula Campaign 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 Army of Virginia was organized as a major unit of the Union Army and operated briefly and unsuccessfully in 1862 in the American Civil War. It should not be confused with its principal opponent, the Confederate Army of Northern Virginia, commanded by Robert E. Lee.
The Northern Virginia Campaign, also known as the Second Bull Run Campaign or Second Manassas Campaign, was a series of battles fought in Virginia during August and September 1862 in the Eastern Theater of the American Civil War. Confederate General Robert E. Lee followed up his successes of the Seven Days Battles in the Peninsula campaign by moving north toward Washington, D.C., and defeating Maj. Gen. John Pope and his Army of Virginia.
The Maryland campaign occurred September 4–20, 1862, during the American Civil War. The campaign was Confederate General Robert E. Lee's first invasion of the North. It was repulsed by the Army of the Potomac under Maj. Gen. George B. McClellan, who moved to intercept Lee and his Army of Northern Virginia and eventually attacked it near Sharpsburg, Maryland. The resulting Battle of Antietam was the bloodiest day of battle in American history.
Jesse Lee Reno was a career United States Army officer who served in the Mexican–American War, in the Utah War, on the western frontier and as a Union General during the American Civil War from West Virginia. Known as a "soldier's soldier" who fought alongside his men, he was killed while commanding a corps at Fox's Gap during the Battle of South Mountain. Reno, Nevada; Reno County, Kansas; Reno, Ohio; El Reno, Oklahoma; Reno, Pennsylvania; Fort Reno (Oklahoma); and Fort Reno Park in Washington, D.C. were named after him.
The Battle of Crampton's Gap, or Battle of Burkittsville, was fought between forces under Confederate Brig. Gen. Howell Cobb and Union Maj. Gen. William B. Franklin as part of the Battle of South Mountain on September 14, 1862, at Crampton's Gap in Western Maryland, during the Maryland Campaign of the American Civil War.
Samuel Garland Jr. was an American attorney from Virginia and Confederate general during the American Civil War. He was killed in action during the Maryland Campaign while defending Fox's Gap at the Battle of South Mountain.
Truman Seymour was a career soldier and an accomplished painter. He served in the Union Army during the American Civil War, rising to the rank of major general. He was present at the Battle of Fort Sumter. He commanded the Union troops at the Battle of Olustee, the only major Civil War battle fought in Florida.
The eastern theater of the American Civil War consisted of the major military and naval operations in the states of Virginia, West Virginia, Maryland, and Pennsylvania, the national capital in Washington, D.C., and the coastal fortifications and seaports of North Carolina. The interior of the Carolinas were considered part of the western theater, and other coastal areas along the Atlantic Ocean were part of the lower seaboard theater.
The 2nd Maryland Infantry was an American military regiment in the Union Army during the American Civil War. It should not be confused with the 2nd Maryland Infantry, CSA, which was composed of Maryland volunteers who fought for the Confederacy during the war. The regiment fought at numerous battles during the course of the war, and lost 5 officers and 84 men killed and wounded, plus 3 officers and 134 men died of disease, for a total of 226 casualties.
The Cavalry Corps of the Army of Northern Virginia was an organized unit of cavalry in the Confederate Army during the American Civil War. Starting out as a brigade in late 1861, becoming a division in 1862 and finally a Corps in 1863; it served in the Eastern Theater until the ANV's surrender in April 1865.
The Confederate Army of Northern Virginia began its Retreat from Gettysburg on July 4, 1863. Following General Robert E. Lee's failure to defeat the Union Army at the Battle of Gettysburg, he ordered a retreat through Maryland and over the Potomac River to relative safety in Virginia.
The 21st Massachusetts Infantry Regiment was an infantry regiment in the Union Army during the American Civil War. It was organized in Worcester, Massachusetts and mustered into service on August 23, 1861.
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Confederate States 
Robert E. Lee 
