This is alist of the costliest land battles of theAmerican Civil War, measured by casualties (killed, wounded, captured, and missing) on both sides.^[A]

Battle	Campaign	Date	Nearest town			Total	Union	Confederacy			Total			Total
				Strength			Commander		Casualties			Casualties as % of strength
Gettysburg	Gettysburg campaign	July 1–3, 1863	Gettysburg, Pennsylvania	93,921	71,699	165,620	George G. Meade	Robert E. Lee	23,049	28,063	51,112	24.54%	39.14%	30.86%
Chickamauga	Chickamauga campaign	September 19–20, 1863	Fort Oglethorpe, Georgia	60,000	65,000	125,000	William Rosecrans	Braxton Bragg	16,173	18,450	34,624	26.95%	28.38%	27.70%
Spotsylvania Court House	Overland Campaign	May 8–21, 1864	Spotsylvania Courthouse, Virginia	100,000	52,000	152,000	Ulysses S. Grant	Robert E. Lee	18,399	12,687	31,086	18.40%	24.40%	20.45%
Chancellorsville	Chancellorsville campaign	May 1–4, 1863	Chancellorsville, Virginia	133,868	60,298	194,166	Joseph Hooker	Robert E. Lee	17,197	13,303	30,500	12.85%	22.06%	15.71%
The Wilderness	Overland Campaign	May 5–7, 1864	Locust Grove, Virginia	101,895	61,025	162,920	Ulysses S. Grant	Robert E. Lee	17,666	11,033	28,699	17.34%	18.08%	17.62%
Stones River (Murfreesboro)	Stones River campaign	December 31, 1862 – January 2, 1863	Murfreesboro, Tennessee	41,400	35,000	76,400	William Rosecrans	Braxton Bragg	12,906	11,739	24,645	31.17%	33.54%	32.26%
Shiloh (Pittsburg Landing)	Federal penetration up the Cumberland and Tennessee Rivers	April 6–7, 1862	Shiloh, Tennessee	66,812	44,699	111,511	Ulysses S. Grant	Albert Sidney Johnston	13,047	10,699	23,746	19.53%	23.94%	21.29%
Antietam (Sharpsburg)	Maryland campaign	September 17, 1862	Sharpsburg, Maryland	75,500	38,000	113,500	George B. McClellan	Robert E. Lee	12,401	10,316	22,717	16.43%	27.15%	20.01%
2nd Bull Run (2nd Manassas)	Northern Virginia campaign	August 29–30, 1862	Manassas, Virginia	62,000	50,000	112,000	John Pope	Robert E. Lee	10,000	8,300	18,300	16.13%	16.60%	16.34%
Fredericksburg	Fredericksburg campaign	December 11–15, 1862	Fredericksburg, Virginia	114,000	72,500	186,500	Ambrose Burnside	Robert E. Lee	12,653	5,377	18,030	11.10%	7.42%	9.67%
Cold Harbor	Overland Campaign	May 31 – June 12, 1864	Mechanicsville, Virginia	108,000	59,000	167,000	Ulysses S. Grant	Robert E. Lee	12,737	4,595	17,332	11.79%	7.79%	10.38%
2nd Petersburg	Richmond–Petersburg campaign	June 15–18, 1864	Petersburg, Virginia	62,000	38,000	100,000	Ulysses S. Grant	Robert E. Lee	11,386	4,000	15,386	18.36%	10.53%	15.39%
Gaines's Mill	Peninsula campaign	June 27, 1862	Mechanicsville, Virginia	34,214	57,018	91,232	George B. McClellan	Robert E. Lee	6,837	7,993	14,830	19.98%	14.02%	16.26%
Missionary Ridge	Chattanooga campaign	November 25, 1863	Chattanooga, Tennessee	56,359	44,010	100,369	Ulysses S. Grant	Braxton Bragg	5,824	6,667	12,491	10.33%	15.15%	12.45%
Atlanta	Atlanta campaign	July 22, 1864	Atlanta, Georgia	34,863	40,438	75,301	William T. Sherman	John Bell Hood	3,641	8,499	12,140	10.44%	21.02%	16.12%
Seven Pines (Fair Oaks)	Peninsula campaign	May 31 – June 1, 1862	Mechanicsville, Virginia	34,000	39,000	73,000	George B. McClellan	Joseph E. Johnston	5,031	6,134	11,165	14.80%	15.73%	15.29%
Nashville	Franklin–Nashville campaign	December 15–16, 1864	Nashville, Tennessee	55,000	30,000	85,000	George H. Thomas	John Bell Hood	3,061	6,000	9,061	5.57%	20.00%	10.66%
Opequon (3rd Winchester)	Sheridan's Valley campaign	September 19, 1864	Winchester, Virginia	40,000	15,514	55,514	Philip Sheridan	Jubal Early	5,020	4,015	9,035	12.55%	25.88%	16.28%
Cedar Creek	Sheridan's Valley campaign	October 19, 1864	Middletown, Virginia	31,610	21,102	52,712	Philip Sheridan	Jubal Early	5,764	2,910	8,674	18.23%	13.79%	16.46%
Franklin	Franklin–Nashville campaign	November 30, 1864	Franklin, Tennessee	27,000	27,000	54,000	John M. Schofield	John Bell Hood	2,326	6,252	8,578	8.61%	23.16%	15.89%
Malvern Hill	Peninsula campaign	July 1, 1862	Varina, Virginia	54,000	55,000	109,000	George B. McClellan	Robert E. Lee	2,100	5,650	7,750	3.89%	10.27%	7.11%
3rd Petersburg	Richmond-Petersburg campaign	April 2, 1865	Petersburg, Virginia	76,113	58,400	134,513	Ulysses S. Grant	Robert E. Lee	3,500	4,250	7,750	4.60%	7.28%	5.76%
Perryville	Kentucky campaign	October 8, 1862	Perryville, Kentucky	22,000	16,000	38,000	Don Carlos Buell	Braxton Bragg	4,276	3,401	7,677	19.44%	21.26%	20.20%
Glendale	Peninsula campaign	June 30, 1862	Varina, Virginia	40,000	45,000	85,000	George B. McClellan	Robert E. Lee	3,797	3,673	7,470	9.49%	8.16%	8.79%
2nd Corinth	Iuka and Corinth Operations	October 3–4, 1862	Corinth, Mississippi	23,000	22,000	45,000	William S. Rosecrans	Earl Van Dorn	2,520	4,233	6,753	10.96%	19.24%	15.01%
Peachtree Creek	Atlanta campaign	July 20, 1864	Atlanta, Georgia	21,655	20,250	41,905	George H. Thomas	John Bell Hood	1,710	4,796	6,506	7.90%	23.68%	15.53%
Champion Hill	Vicksburg campaign	May 16, 1863	Edwards, Mississippi	32,000	22,000	54,000	Ulysses S. Grant	John C. Pemberton	2,457	3,840	6,297	7.68%	17.45%	11.66%
The Crater	Richmond-Petersburg campaign	July 30, 1864	Petersburg, Virginia	8,500	6,100	14,600	Ulysses S. Grant	Robert E. Lee	3,798	1,491	5,289	44.68%	24.44%	36.23%
Fort Stedman	Richmond-Petersburg campaign	March 25, 1865	Petersburg, Virginia	14,898	10,000	24,898	John G. Parke	John B. Gordon	1,044	4,000	5,044	7.01%	40.00%	20.26%
South Mountain	Maryland campaign	September 14, 1862	Boonsboro, Maryland	28,000	18,000	46,000	George B. McClellan	Robert E. Lee	2,325	2,685	5,010	8.30%	14.92%	10.89%
1st Bull Run (1st Manassas)	Manassas campaign	July 21, 1861	Manassas, Virginia	35,000	34,000	69,000	Irvin McDowell	P. G. T. Beauregard	2,896	1,982	4,878	8.27%	5.83%	7.07%

• List of American Civil War battles
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