September 16-18, 1862
Key Individuals Involved in the Battle of Antietam:
Union: Major General George B. McClellan
Confederate: General Robert E. Lee
The result of the battle was inconclusive, but the north did win a strategic advantage. 23,100 casualties.
Significance of the Battle of Antietam:
The Battle of Antietam forced the Confederate Army to retreat back across the Potomac River. President Abraham Lincoln saw the significance of this and issued the famous Emancipation Proclamation on September 22, 1862.
Overview of the Battle:
On September 16, Maj. Gen. George B. McClellan confronted Lee’s Army of Northern Virginia at Sharpsburg, Maryland. At dawn September 17, Hooker’s corps mounted a powerful assault on Lee’s left flank that began the single bloodiest day in American military history. Attacks and counterattacks swept across Miller’s cornfield and fighting swirled around the Dunker Church. Union assaults against the Sunken Road eventually pierced the Confederate center, but the Federal advantage was not followed up. Late in the day, Burnside’s corps finally got into action, crossing the stone bridge over Antietam Creek and rolling up the Confederate right. At a crucial moment, A.P. Hill’s division arrived from Harpers Ferry and counterattacked, driving back Burnside and saving the day. Although outnumbered two-to-one, Lee committed his entire force, while McClellan sent in less than three-quarters of his army, enabling Lee to fight the Federals to a standstill. During the night, both armies consolidated their lines. In spite of crippling casualties, Lee continued to skirmish with McClellan throughout the 18th, while removing his wounded south of the river. McClellan did not renew the assaults. After dark, Lee ordered the battered Army of Northern Virginia to withdraw across the Potomac into the Shenandoah Valley.
Source: CWSAC Battle Summaries