Civil War Killed

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Civil War Killed, Casualties, and Wounded
Union and Confederate Total Dead and Fatalities

Civil War Killed
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Civil War Killed at Battle of Cold Harbor

Civil War Killed
American Civil War Total Dead, Casualties, Wounded, and Prisoners

2009 David Walbert
located online learnnc.org

Historians estimate that about 620,000 Americans died in the Civil War. That’s almost as many that have died in all other U.S. wars combined:

Deaths in U.S. Wars
(a) as of April 2009. (b) as of May 2009.
War Dates        U.S. Deaths
Revolution 1775–1783          4,000
War of 1812 1812–1815          2,000
Mexican-American War 1846–1848        13,000
Civil War 1861–1865      618,000
Spanish-American War 1898          2,000
World War I 1917–1918      112,000
World War II 1941–1945      405,000
Korean War 1950–1953        54,000
Vietnam War 1959–1975        58,000
Persian Gulf War 1991             300
Afghanistan War 2001–             600 (a)
Iraq War 2003–          4,300 (b)

The numbers are especially shocking when you remember that the population of the United States in 1860 was only 31,443,321 — which means that nearly two percent of the U.S. population died in the Civil War.

Both sides in the conflict lost about the same fraction of their troops — 23 or 24 percent — so one soldier in four died.

Civil War Casualties
Union         Confederacy Total
Deaths
Death from wounds 110,070            94,000   204,070
Death from disease 249,458          164,000   413,458
Total deaths 359,528          258,000   617,528
Total death rate 23%          24%   23%
Wounded
Wounded 275,175        ~100,000 ~375,000
All Casualties
Totals 634,703        ~358,000 ~992,703

Individual Battles

The following table lists battles with more than 20,000 casualties. Here, “casualties” includes killed, wounded, captured, and missing. Note that estimates of casualties vary — often widely — and we've tried to give the most commonly cited numbers or ranges, rounded off for simplicity.

Regardless of the detail, the scale of the carnage is simply incredible. As many Americans died in a single day at Antietam as died in the entire War for Independence. In the Normandy Landings on “D-Day,” June 6, 1944 — the most famous battle of World War II — the U.S. suffered 6,600 casualties, yet that number pales in comparison with the deaths at Gettysburg. (See also: American Civil War Casualties, Fatalities and Statistics and Total Union and Confederate Civil War Killed and Mortally Wounded (Dead), With Numbers for Each Northern and Southern State.)

Bloodiest Battles of the Civil War
Battle Dates Union Confederate Total Casualties
Forces Casualties Percent Forces Casualties Percent
Gettysburg July 1–3, 1863 94,000 23,000 24% 72,000 23,000 30% 46,000
Chickamauga Sept. 19–20, 1863 60,000 16,000 27% 65,000 18,500 28% 34,500
Chancellorsville May 1–4, 1863 134,000 17,000 13% 61,000 13,000 21% 30,000
Spotsylvania Court House May 8–19, 1864 100,000 18,000 18% 52,000 12,000 23% 30,000
The Wilderness May 5–7, 1862 102,000 18,500 18% 61,000 7,500–11,500 12–19% 26,000–30,000
Second Bull Run (Second Manassas) August 28–30, 1862 62,000 14,500 23% 50,000 9,500 19% 24,000
Antietam Sept. 17, 1862 87,000 12,500 14% 45,000 10,500 23% 23,000
Stones River Dec. 31, 1862–Jan. 2, 1863 43,500 13,000 30% 38,000 10,000 26% 23,000
Shiloh April 6–7, 1862 67,000 13,000 19% 44,500 10,500 24% 23,500

The Reasons

There were several reasons for the huge numbers of casualties in the Civil War. They had to do not only with the way battles were fought, but with what happened to soldiers afterward.

Civil War Killed
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American Civil War Killed

Total Civil War Killed
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It was often loss of life or loss of limb for the Civil War soldier.

Technology

Military technology improved tremendously in the middle of the nineteenth century. In particular, new guns could be loaded faster or fire multiple rounds without being reloaded. The first revolver was invented in 1836, and breech-loading rifles could be loaded from the back, letting a solider fire more rounds per minute.

The minie ball made infantry fighting especially deadly. A rifled barrel spins the bullet and thus makes it fly straighter — think of the spiral on a football — but older rifles had to be loaded by slowly stuffing the bullet through the grooves of the barrel, which was not practical for someone in the heat of battle. The minie ball was smaller than the diameter of the barrel, and so a soldier could load his rifle simply by dropping the minie ball down the barrel. When the rifle was fired, the powder in the cartridge burned, producing hot gas that caused the minie ball to expand and fill the barrel. The grooves in the base of the ball then fit into the grooves of the barrel.

The combination of speed and accuracy meant that infantry fighting was deadlier than ever before. A competent marksman could hit his target from 200 yards away, and the minie ball traveled fast enough to shatter bone on impact. The balls were also soft, not hard-jacketed, and so they spread on impact, making a larger hold and causing more damage and bleeding. (See Organization of Union and Confederate Armies: Infantry, Cavalry, Artillery: HOMEPAGE.)

Strategy

The rifle and minie ball gave a new advantage to the defense in a battle. Older muskets — without rifling — had a much smaller range, and allowed soldiers to get close enough together to fight hand to hand, with bayonets. In the Civil War, armies engaged each other at greater distances. Artillery also became less important, because cannon crews could be picked off by distant marksmen. As a result, an army with a good position could simply mow down enemy soldiers making a frontal assault.

Yet most generals in the Civil War clung to older theories of warfare that valued offense rather than defense — in part because that was what they had learned at West Point, and in part because their sense of honor demanded a willingness to fight. But frontal assaults, however heroic they might sound in books, were suicidal now. In Pickett’s Charge at the Battle of Gettysburg, almost 6,000 Confederate soldiers were killed or wounded as they advanced uphill over a mile of open ground toward entrenched Union positions. (See Napoleonic Linear Tactics.)

Disease

If you look at the table above, you’ll see that twice as many men died of disease as were killed in battle. So many men living in close quarters, under great stress and often with poor nutrition, were subject to epidemics. Diseases such as measles, mumps, and whooping cough swept through the camps. Near swamps, mosquitoes brought malaria. And already-weakened soldiers who caught a common cold often developed pneumonia.

But the biggest cause of disease was a lack of sanitation. Open latrines, decomposing food, and manure attracted disease-carrying insects and contaminated drinking water. The Union army reported that more than 995 out of every 1,000 men contracted chronic diarrhea or dysentery during the war. Typhoid fever, caused by salmonella bacteria in food and water, was responsible for as many as a quarter of all non-combat casualties in the Confederate army.

Disease was, sadly, an expected part of war in the nineteenth century. Not until World War II would the U.S. fight a war in which more soldiers died of battle wounds than of disease. (See Union and Confederate Civil War Prisoner of War and Prison History: Homepage.)

Medicine

Not only were the causes of disease still poorly understood in the 1860s, but by today’s standards, army surgeons — military doctors were all called “surgeons” — were not skilled at treating disease or at repairing wounds. They operated in conditions we would find primitive, with no antibiotics, no painkillers, and no means of sanitizing surgical tools. Since the germ theory of disease (that disease and infection are caused by microorganisms) hadn't yet been developed and accepted, doctors wouldn't have sterilized their tools in any case.

Of all the wounds soldiers received to their arms and legs, about one in six could not be repaired and resulted in amputation. Amputation could lead to gangrene, in which the flesh rots from lack of blood flow, or to various kinds of infections. Despite these dangers, three-fourths of amputees survived. Given the constraints of the time, army surgeons did well to save as many lives as they did. (See The American Civil War Soldier: HOMEPAGE.)

Civil War Killed
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Disease claimed more in killed than all other causes combined.

Civil War Killed
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American Civil War Killed at Battle of Antietam

2009 David Walbert
located online learnnc.org

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