Bloodiest Single Day in American Military History
5831 Dunker Church Road, Sharpsburg, MD 21782
Age
All Ages
Cost
$
Park entrance approximately $10 per vehicle for a 3-day pass; free with annual pass
Access
Wheelchair OK
Paved auto tour and visitor center; mowed grass at trails and Bloody Lane
Equipment
Photos OK
Est. 1862 · Bloodiest Day in American Military History · Preliminary Emancipation Proclamation Context · 1890 Battlefield Establishment · National Park Service Site
The Battle of Antietam was fought on September 17, 1862, near Sharpsburg, Maryland, along Antietam Creek. Union forces under Major General George B. McClellan, numbering approximately 87,000, engaged the Army of Northern Virginia under General Robert E. Lee, numbering approximately 38,000. The combined casualty total of 22,717 — killed, wounded, captured, and missing — exceeded the total American casualties from the Revolution, the War of 1812, the Mexican-American War, and the Spanish-American War combined.
The battle unfolded in three main phases. The morning phase, from dawn until roughly 9:30 a.m., centered on the Cornfield and the woods around Dunker Church. The midday phase shifted south to the Sunken Road, where Confederate Brigadier General D.H. Hill's division held a farm lane worn below ground level by generations of wagon traffic. Union assaults overran the position after nearly four hours of close-range fire; the lane filled with the dead and wounded so completely that the position became known almost immediately as the Bloody Lane. The afternoon phase concluded with Major General Ambrose Burnside's forces crossing the stone bridge over Antietam Creek — later named Burnside's Bridge — and threatening the Confederate right flank before being checked by the arrival of A.P. Hill's division from Harpers Ferry.
Lee's army withdrew across the Potomac on the night of September 18-19. McClellan, despite Lincoln's urging, did not pursue. The outcome was strategically a Union victory: Lee's first invasion of Maryland ended, and the political context shifted enough that Lincoln issued the Preliminary Emancipation Proclamation on September 22, 1862, transforming the war's aims from preservation of the Union to abolition of slavery.
The battlefield was established as Antietam National Battlefield Site on August 30, 1890, originally under War Department administration. Transfer to the National Park Service occurred on August 10, 1933, and the site was redesignated Antietam National Battlefield on November 10, 1978. The park comprises approximately 3,200 acres and is one of the most carefully preserved Civil War battlefields, with intact viewsheds across most of the historic battle lines.
Antietam National Cemetery, established in 1865 and now adjacent to the battlefield, contains the remains of 4,776 Union soldiers, of whom 1,836 are unidentified. Confederate dead were buried in private and church cemeteries in surrounding communities, principally Mount Olivet in Hagerstown.
Sources
Antietam has accumulated one of the most substantial paranormal-encounter records of any National Park Service site. The Federal Highway Administration — an unlikely source — published an essay titled Ghosts of Antietam's Battlefield and the Bloody Lane that compiled visitor and staff accounts collected over decades. The essay's existence reflects the persistence and consistency of the reports rather than any official Park Service endorsement.
The Bloody Lane generates the densest cluster of reports. Visitors and rangers have described the sound of distant musketry and drumming at dusk, the scent of black-powder smoke in still air, and figures in Confederate gray observed standing in the sunken road and disappearing when approached. A specific and frequently-repeated account from the 1970s describes a Boys' School group from Maryland staying at the battlefield overnight; several boys independently reported hearing a phrase in Gaelic — Faugh a Ballagh, the war cry of the Union Irish Brigade — repeated at intervals through the night.
The Pry House, McClellan's command headquarters and a working field hospital after the battle, has been the subject of repeated reports of phantom footsteps on the upper floors, the smell of medical alcohol, and a woman in 19th-century mourning dress observed at the windows. The Pry House is now operated as a Civil War Medicine Museum by the National Museum of Civil War Medicine.
Burnside Bridge has generated reports of the sound of drumming in the wooded slope above the bridge, sometimes attributed to a young drummer boy reportedly buried near the bridge after the battle. Burnside's headquarters near the bridge has been the subject of reports of phantom voices and the sense of being followed along the approach trail.
The St. Paul Episcopal Church in Sharpsburg — used as a hospital during and after the battle — has had reports of bloodstains that reappear after cleaning on the church's hardwood floors. Several Sharpsburg homes that served as field hospitals have similar reputations.
The Park Service does not formally collect or endorse these accounts, but rangers will discuss them with visitors who ask. Antietam is one of the few Civil War battlefields where the paranormal reputation appears in agency-adjacent literature, and the accounts have remained remarkably consistent across more than a century of visitation.
Notable Entities
Media Appearances
Drive the 8.5-mile auto tour past the Cornfield, Dunker Church, Bloody Lane (the Sunken Road), and Burnside Bridge. The Bloody Lane trail follows the original farm road where Confederate and Union forces fought for nearly four hours, with thousands of casualties along a several-hundred-yard stretch.
The Antietam Visitor Center includes interpretive exhibits, a 26-minute orientation film, and the original 1830 farmhouse used as a Confederate field hospital. The Bloody Lane Observation Tower offers an elevated view of the sunken road and the surrounding farmland.
Antietam rangers offer scheduled walking tours of specific battle locations throughout the operating season. Bloody Lane and the Cornfield are the most-frequent subjects, with longer programs focused on the morning, midday, and afternoon phases of the September 17, 1862 battle.
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