Ten Costliest Battles of the American Civil War (killed, wounded, missing, and captured)

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The Ten Costliest and Bloodiest Battles of the American Civil War:
Estimated Total Casualties (killed, wounded, missing, and captured)

 
#1
Battle of Gettysburg
Date: July 1-3, 1863
Location: Pennsylvania
Confederate Commander: Robert E. Lee
Union Commander: George G. Meade
Confederate Forces Engaged: 75,054
Union Forces Engaged: 83,289
Winner: Union
Casualties: 51,000 (23,000 Union and 28,000 Confederate)

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#2
Battle of Chickamauga
Date: September 18-20, 1863
Location: Georgia
Confederate Commander: Braxton Bragg
Union Commander: William Rosecrans
Confederate Forces Engaged: 66,326
Union Forces Engaged: 58,222 
Winner: Confederacy
Casualties: 34,624 (16,170 Union and 18,454 Confederate)

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#3
Battle of Spotsylvania Court House
Date: May 8-21, 1864
Location: Virginia
Confederate Commander: Robert E. Lee
Union Commander: Ulysses S. Grant
Confederate Forces Engaged: 52,000
Union Forces Engaged: 100,000
Winner: Confederacy
Casualties: 30,000 (18,000 Union and 12,000 Confederate)


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#4
Battle of the Wilderness*
Date: May 5-7, 1864
Location: Virginia
Confederate Commander: Robert E. Lee
Union Commander: Ulysses S. Grant
Confederate Forces Engaged: 61,025
Union Forces Engaged: 101,895
Winner: Inconclusive
Casualties: 29,800 (18,400 Union and 11,400 Confederate)
* Casualty sources greatly vary for Wilderness
 
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#5
Battle of Chancellorsville
Date: April 30 - May 6, 1863
Location: Virginia
Confederate Commander: Robert E. Lee
Union Commander: Joseph Hooker
Confederate Forces Engaged: 57,352
Union Forces Engaged: 97,382
Winner: Confederacy
Casualties: 24,000 (14,000 Union and 10,000 Confederate)

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#6
Battle of Shiloh
Date: April 6-7, 1862
Location: Tennessee
Confederate Commander: Albert Sidney Johnston and P. G. T. Beauregard
Union Commander: Ulysses S. Grant
Confederate Forces Engaged: 44,968
Union Forces Engaged: 65,085
Winner: Union
Casualties: 23,746 (13,047 Union and 10,699 Confederate)

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#7
Battle of Stones River
Date: December 31, 1862 - January 2, 1863
Location: Tennessee
Confederate Commander: Braxton Bragg
Union Commander: William S. Rosecrans
Confederate Forces Engaged: 37,739
Union Forces Engaged: 41,400
Winner: Union
Casualties: 23,515 (13,249 Union and 10,266 Confederate)

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#8
Battle of Antietam (Sharpsburg)*
Date: September 16-18, 1862
Location: Maryland
Confederate Commander: Robert E. Lee
Union Commander: George B. McClellan
Confederate Forces Engaged: 51,844
Union Forces Engaged: 75,316
Winner: Inconclusive
Casualties: 23,100 (12,400 Union and 10,700 Confederate)
* Excludes the Battle of South Mountain. Many, however, include the Battle of South Mountain which would add an additional 4,500 casualties
 
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#9
Battle of Second Manassas (Second Bull Run)
Date: August 28-30, 1862
Location: Virginia
Confederate Commander: Robert E. Lee
Union Commander: John Pope
Confederate Forces Engaged: 48,527
Union Forces Engaged: 75,696
Winner: Confederacy
Casualties: 22,180 (13,830 Union and 8,350 Confederate)


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#10
Battle of Vicksburg* (Siege of Vicksburg)
Date: May 18 - July 4, 1863
Location: Mississippi
Confederate Commander: John C. Pemberton
Union Commander: Ulysses S. Grant
Confederate Forces Engaged: Army of Vicksburg
Union Forces Engaged: Army of the Tennessee
Winner: Union
Casualties: 19,233 (10,142 Union and 9,091 Confederate)
* Excludes parolees
 
Source: National Park Service

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