The American Civil War is the conflict with the largest number of American military fatalities in history. In fact, the Civil War's death toll is comparable to all other major wars combined, the deadliest of which were the World Wars, which have a combined death toll of more than 520,000 American fatalities. The ongoing series of conflicts and interventions in the Middle East and North Africa, collectively referred to as the War on Terror in the west, has a combined death toll of more than 7,000 for the U.S. military since 2001. Other records In terms of the number of deaths per day, the American Civil War is still at the top, with an average of 425 deaths per day, while the First and Second World Wars have averages of roughly 100 and 200 fatalities per day respectively. Technically, the costliest battle in U.S. military history was the Battle of Elsenborn Ridge, which was a part of the Battle of the Bulge in the Second World War, and saw upwards of 5,000 deaths over 10 days. However, the Battle of Gettysburg had more military fatalities of American soldiers, with almost 3,200 Union deaths and over 3,900 Confederate deaths, giving a combined total of more than 7,000. The Battle of Antietam is viewed as the bloodiest day in American military history, with over 3,600 combined fatalities and almost 23,000 total casualties on September 17, 1862. Revised Civil War figures For more than a century, the total death toll of the American Civil War was generally accepted to be around 620,000, a number which was first proposed by Union historians William F. Fox and Thomas L. Livermore in 1888. This number was calculated by using enlistment figures, battle reports, and census data, however many prominent historians since then have thought the number should be higher. In 2011, historian J. David Hacker conducted further investigations and claimed that the number was closer to 750,000 (and possibly as high as 850,000). While many Civil War historians agree that this is possible, and even likely, obtaining consistently accurate figures has proven to be impossible until now; both sides were poor at keeping detailed records throughout the war, and much of the Confederacy's records were lost by the war's end. Many Confederate widows also did not register their husbands death with the authorities, as they would have then been ineligible for benefits.
The American Civil War is the conflict with the largest number of American military fatalities in history. In fact, the Civil War's death toll is comparable to all other major wars combined, the deadliest of which were the World Wars, which have a combined death toll of more than 520,000 American fatalities. The ongoing series of conflicts and interventions in the Middle East and North Africa, collectively referred to as the War on Terror in the west, has a combined death toll of more than 7,000 for the U.S. military since 2001. Other records In terms of the number of deaths per day, the American Civil War is still at the top, with an average of 425 deaths per day, while the First and Second World Wars have averages of roughly 100 and 200 fatalities per day respectively. Technically, the costliest battle in U.S. military history was the Battle of Elsenborn Ridge, which was a part of the Battle of the Bulge in the Second World War, and saw upwards of 5,000 deaths over 10 days. However, the Battle of Gettysburg had more military fatalities of American soldiers, with almost 3,200 Union deaths and over 3,900 Confederate deaths, giving a combined total of more than 7,000. The Battle of Antietam is viewed as the bloodiest day in American military history, with over 3,600 combined fatalities and almost 23,000 total casualties on September 17, 1862. Revised Civil War figures For more than a century, the total death toll of the American Civil War was generally accepted to be around 620,000, a number which was first proposed by Union historians William F. Fox and Thomas L. Livermore in 1888. This number was calculated by using enlistment figures, battle reports, and census data, however many prominent historians since then have thought the number should be higher. In 2011, historian J. David Hacker conducted further investigations and claimed that the number was closer to 750,000 (and possibly as high as 850,000). While many Civil War historians agree that this is possible, and even likely, obtaining consistently accurate figures has proven to be impossible until now; both sides were poor at keeping detailed records throughout the war, and much of the Confederacy's records were lost by the war's end. Many Confederate widows also did not register their husbands death with the authorities, as they would have then been ineligible for benefits.
The Korean War was an international military conflict which lasted from June 1950 until July 1953, which pitted the communist forces of North Korea, the Soviet Union, and the People's Republic of China against South Korea and a U.S.-led UN force comprised of troops from over 20 additional countries. The war was the United States' first major military engagement of the Cold War, the period of rivalry and heightened tension between the world's two superpowers, the U.S. and Soviet Union. While the war was one of the deadliest in the Cold War and the 20th century in general, it resulted in a stalemate between the North and South, with the boundary between the two countries remaining to this day at the 38th parallel line. The two countries remain technically at war to the present day, as the South's dictator, Syngman Rhee, refused to sign the peace agreement which in practice ended the fighting in the war.
U.S. military deaths in Korea
The majority of U.S. military fatalities during the Korean War were battle deaths (63 percent), with a smaller number of deaths while missing (12 percent), deaths while captured (eight percent), or deaths from battle wounds (seven percent). In addition, around three percent of deaths were from airplane crashes which were not caused by hostile forces, with another seven percent dying of other causes unrelated to battle. In total around 36,000 U.S. military servicemembers were killed in Korea, out of a total of around 40,000 deaths for the UN forces combined. The war was the United States' second deadliest conflict of the Cold War, as well as its fifth deadliest ever, after the Vietnam War, World War I, World War II, and the Civil War.
The American Civil War is the conflict with the largest number of American military fatalities in history. In fact, the Civil War's death toll is comparable to all other major wars combined, the deadliest of which were the World Wars, which have a combined death toll of more than 520,000 American fatalities. The ongoing series of conflicts and interventions in the Middle East and North Africa, collectively referred to as the War on Terror in the west, has a combined death toll of more than 7,000 for the U.S. military since 2001. Other records In terms of the number of deaths per day, the American Civil War is still at the top, with an average of 425 deaths per day, while the First and Second World Wars have averages of roughly 100 and 200 fatalities per day respectively. Technically, the costliest battle in U.S. military history was the Battle of Elsenborn Ridge, which was a part of the Battle of the Bulge in the Second World War, and saw upwards of 5,000 deaths over 10 days. However, the Battle of Gettysburg had more military fatalities of American soldiers, with almost 3,200 Union deaths and over 3,900 Confederate deaths, giving a combined total of more than 7,000. The Battle of Antietam is viewed as the bloodiest day in American military history, with over 3,600 combined fatalities and almost 23,000 total casualties on September 17, 1862. Revised Civil War figures For more than a century, the total death toll of the American Civil War was generally accepted to be around 620,000, a number which was first proposed by Union historians William F. Fox and Thomas L. Livermore in 1888. This number was calculated by using enlistment figures, battle reports, and census data, however many prominent historians since then have thought the number should be higher. In 2011, historian J. David Hacker conducted further investigations and claimed that the number was closer to 750,000 (and possibly as high as 850,000). While many Civil War historians agree that this is possible, and even likely, obtaining consistently accurate figures has proven to be impossible until now; both sides were poor at keeping detailed records throughout the war, and much of the Confederacy's records were lost by the war's end. Many Confederate widows also did not register their husbands death with the authorities, as they would have then been ineligible for benefits.
As of March 2021, 11 U.S. soldiers died in Iraq in 2020. This is a decrease from a peak of 904 casualties in 2007.
Additional information on fatalities in the Iraq War
The invasion of Iraq by the United States and coalition forces in March 2003 saw the beginning of the Iraq War, a conflict that would continue beyond the end of the decade. Fatalities of American forces were highest in the first five years of conflict as soldiers grappled with the Al Qaeda as well as civil war between those groups seeking to fill the power vacuum left by the removal of Iraqi leader Saddam Hussein. Casualties progressively decreased from 2008, in part due to attempts by Barack Obama who made the removal of troops from Iraq a central promise of this successful campaign to succeed George W. Bush. In 2013, the majority of Americans considered sending troops to fight in Iraq to be a mistake.
While the number of civilian deaths in the Iraq War was much higher, the trend of numbers decreasing from 2008 onward was in line with the trend for American solider losses. However, civilian deaths rose again from 2013 onward as Iraq returned to heavy conflict with Islamic State.
The high number of American fatalities in the first five years of the Iraq War could be seen as influencing the reluctance of the United States to commit ground troop support in the battle against Islamic State when the issue was discussed in 2015. Not only is the loss of life a tragedy in itself, but the political discourse in the United States surrounding the involvement of their troops in Middle Eastern conflicts has made further involvement unattractive to elected officials. However calls for further ground support are likely to continue as Iraq remained in the top five countries with the most terrorist attacks as of 2019.
Between 2003 and 2024, the annual number of civilian deaths due to the Iraq war has fluctuated significantly. As of July, there were 210 deaths in 2024. Civilian Deaths in the Iraq WarCivilian casualties are the deaths of non-military individuals as a result of military operations. The number of documented civilian deaths in the Iraq war peaked in 2006 at 29,526 casualties. Since then, the number had fallen to 4,162 casualties documented in the year 2011, and the number of casualties has been decreasing again since 2014. Due to the nature of the Iraq war and of war reporting, data cannot be considered exact. Many civilian deaths that occurred during the war in Iraq may remain unaccounted for. The Iraq war was launched in March 2003 upon the invasion of Iraq by U.S. forces. Eight years later, in December 2011, the U.S. formally declared an end to the Iraq war. From the start of the war in 2003 until September 30, 2015, it is estimated that the United States spent a total of over 819 billion US dollars on war costs in Iraq. This number includes funding requested by the President and appropriated by Congress, and accounts for both military and non-military spending. Spending was highest in 2008, that year over 142 billion US dollars were spent in Iraq by the United States government. As of 2022, around 6,561 U.S. active-duty military personnel were deployed in North Africa, the Near East, and South Asia. The number of US American soldiers killed in Iraq peaked in 2007 with just over nine hundred causalities. In the same year, there were over 25,000 civilian deaths in Iraq.
Of the ten deadliest battles of the American Civil War, the Battle of Gettysburg in early July, 1863, was by far the most devastating battle of the war, claiming over 51 thousand casualties, of which 7 thousand were battle deaths. The Battles of Shiloh, Bull Run (Second), Antietam, Stones River and Chancellorsville all have very similar casualty counts, between 22.5 and 24 thousand casualties each, although it should be noted that the Battle of Antietam took place in a single day, and with 22,717 casualties it is the bloodiest day in U.S. history. The Battles of Chickamauga, the Wilderness and Spotsylvania, all had approximately 30 to 35 thousand casualties each, whereas the Siege of Vicksburg is the only entry on this list with less than 20 thousand casualties.
The number of soldiers killed in Afghanistan in 2021 amounted to 13 from the Western coalition, as of October 2021. Operation Enduring Freedom (OEF) is a large military operation, being carried out within the framework of the War on Terror.
Afghanistan War
As mentioned above, Operation Enduring Freedom in Afghanistan, which began in October 7, 2001, caused the deaths of many soldiers during the period from 2001 to 2020. Operation Enduring Freedom is an American term for the Afghanistan War, used by the U.S. government.
Operation Enduring Freedom was a response to the terror attacks on the World Trade Center and the Pentagon on September 11, 2001 and the beginning of the Global War on Terrorism.
Although it has been nearly 20 years since the Americans started the Global War on Terror, there are still many terrorist attacks in Afghanistan. About 1,750 terrorist attacks were counted in the country 2019.
Due to terrorism in Afghanistan, the number of deaths has increased from 1,952 killed people in 2007 up to 5,312 killed people in 2015 by terrorists. In 2019, the number stood at 8,681.
Throughout the period in which the United States was in an armed conflict with the Communist-led government and insurgency in Vietnam (referred to as the "Vietnam War" in the U.S. and the "Resistance War against the United States" in Vietnam), around 40 percent of the 8.7 million U.S. military service personnel were stationed in South-East Asia. Of these personnel in the theatre of war, around two percent were killed during the conflict.
This war was part of the wider Cold War of the second half of the 20th century, where the rivalry between the superpowers of the United States and Soviet Union dominated the post-World War II era. During this period the U.S. stationed much of its remaining five million service personnel outside of active conflict zones, especially in strategically important countries such as (West) Germany, South Korea, and Japan, in addition to those stationed at home.
https://www.icpsr.umich.edu/web/ICPSR/studies/9563/termshttps://www.icpsr.umich.edu/web/ICPSR/studies/9563/terms
This data collection consists of telephone surveys concerning the Persian Gulf war between Iraq and the allied Coalition forces. Part 1, conducted just prior to the January 15th deadline set by the United Nations Security Council for Iraq to withdraw from Kuwait, asked respondents if the United States should take military action, what the likelihood was that the United States would go to war, how long the war would last, and how many casualties would result. Additional questions included whether the United States should hold further talks with Iraq, whether a diplomatic solution was possible, if the United States should agree to an Arab-Israeli conference, and if respondents approved of actions taken by George Bush and Congress. Parts 2-9 were conducted after the outbreak of war. Respondents were asked if they approved or disapproved of George Bush's and Israel's handling of the situation, of the United States' having gone to war, and of American anti-war protests. They were also asked how long they thought the war would last, how many casualties would result, who would win, if enough had been done to seek a diplomatic solution, and if the United States and her allies had been right to attack Iraq. In addition, respondents were asked how they rated the job the United States military was doing, if the air war would be enough or if a ground war would be necessary, if the government was releasing enough or too much information, if Israel should strike back at Iraq for the missile attacks, if the respondent was afraid to travel or afraid of increased terrorism, if the United States was heading toward another Viet Nam, and whether moral principle or economic reality had been the motive behind American troops' being sent to the Persian Gulf. Other topics covered include the final objective of the war (driving Iraq out of Kuwait or Saddam Hussein from power), allied bombing in Baghdad and issues surrounding hits on possible military targets that would result in civilian casualties, the presence of American reporters in Iraq, talks between Iraq and the Soviet Union seeking a diplomatic solution, and a set of questions addressing possible outcomes for Saddam Hussein and the respondent's personal feelings regarding him. Background information provided includes age, race, sex, political party identification, state/region of residence, and if the respondent had friends or relatives serving in the military in the Gulf region.
https://www.icpsr.umich.edu/web/ICPSR/studies/9619/termshttps://www.icpsr.umich.edu/web/ICPSR/studies/9619/terms
This series of interviews tracks public opinion regarding the Persian Gulf War from the period immediately prior to the initiation of bombing in January 1991 to the ensuing ground combat in February. In addition to monitoring the evolving war, these data also provide an ongoing evaluation of the Bush presidency during that time period. Part 1 (January 5-7) examines sending troops to Saudi Arabia vs. staying out, the likelihood of war, Bush's efforts to find diplomatic solutions, negotiating with Saddam Hussein vs. forcing Iraq to leave Kuwait, the possibility of terrorist attacks in the United States, how closely the respondent followed the news of the Persian Gulf situation, military action against Iraq vs. waiting for sanctions to work, requiring a congressional declaration of war, Congress voting on a declaration of war before or after the January 15 deadline for Iraq's withdrawal, the January 9 meeting between Secretary of State James Baker and Iraq's foreign minister, attempting to meet with Hussein before January 15, and what might happen in the Persian Gulf in the event of war or otherwise. Part 2 (January 11-13) poses questions identical to Part 1 and addresses new issues, including whether Bush had already decided prior to the January 15 deadline to send troops into battle, whether a Kuwaiti offer to trade part of its territory in exchange for Iraq's withdrawal would be an acceptable resolution to the crisis, whether congressional authorization of the use of force would increase the likelihood of war, how congressmen should vote concerning the authorization of force, what Bush should do if only one house of Congress votes in favor of the use of force, whether the failure of the meeting between Secretary Baker and Iraq's foreign minister on January 9 made war more likely, and more questions related to what might happen in the Persian Gulf in the event of war or otherwise. Part 3 (January 5-7, 17 Panel) replicates both Part 1, the January 5-7 survey, and Part 5, the January 17 survey. It also examines new issues, including whether the United States did the right thing in initiating military action against Iraq, whether the war would last weeks or months, the number of expected American casualties in the war, whether the United States should remove Saddam Hussein from power in addition to driving Iraqi troops out of Kuwait, bombing military targets in heavily populated civilian areas vs. targets not in heavily populated areas, impressions of how the war was proceeding for the United States, how the respondent first heard about the war, perceptions of the main reason why United States forces were fighting in the Persian Gulf, and the reliability of Israel as an ally of the United States. Part 4 (January 17-20 Combined) replicates questions from Part 3, the January 17 survey, and probes new areas, including whether the war to defeat Iraq would be worth the cost in human life and financial resources, whether news that the war had begun made the respondent feel more worried or relieved, whether members of Congress who voted against the use of military force were viewed more/less favorably, FBI interviews of Arab-American business/community leaders, Arab-American sympathy for Iraq, Israeli retaliation for future Iraqi missile attacks, opposition to the war via protest marches/rallies and their effect on the war effort, military/economic aid to Israel, whether the United States military was holding back information about the war, if following the war news had affected the respondent's schedule, and whether the United States was correct to enter the Vietnam War. Questions unique to Part 5 (January 17) include whether the respondent felt proud about the United States' actions in the Persian Gulf, and whether getting Saddam Hussein out of Kuwait or the outcome of the struggle for freedom in the Soviet Union was of more importance to the United States. Questions unique to Part 6 (January 18) include whether Israel should retaliate for future Iraqi missile attacks. Part 7 (January 19) repeats questions from Part 6. Questions asked in Part 8 (January 20) include whether military/economic aid to Israel should be increased. Questions unique to Part 9 (February 12-13) consider whether Iraqi troops could be forced out of Kuwait by continued bombing or if a ground war would be necessary, the timing of the start of a ground war, w
A growing body of research argues that external threats from the international system strengthen ethnocentrism and authoritarianism, personal values anchored in national identity. We evaluate a necessary implication of this argument, that these shifting values drive change in broader social behaviors. Our focus is revealed value change in a non-political setting: American consumers' choice of supermarket brands that symbolize national identity. Our empirical analyses leverage US counties' quasi-random exposure to US Iraq War casualties to identify the effects of local casualties on the weekly market share growth of ``American" supermarket brands. We analyze weekly supermarket scanner data for a representative sample of over 1,100 US supermarkets and 8,000 brands. During 2003-2006, the weekly market share of American brands grew relative to non-American brands in casualty-exposed supermarkets. Variation in share growth across customer demographics is consistent with reactions to external threat. We rule out alternative mechanisms including partisan cues, other product characteristics, and animosity towards other countries. These findings strengthen IR's theoretical microfoundations by showing that international politics can reshape values enough to change broader social behaviors.
The map shows Iraq war fatality counts by cities. It is based on the data compiled by Iraq Coalition Casualty Count organization (http://icasualties.org/oif/). Here is a link to read about how they collect the data http://icasualties.org/oif/Methodology.aspx
Of the ten deadliest battles of the American Civil War, the Battle of Gettysburg in early July, 1863, was by far the most devastating battle of the war, claiming over 51 thousand casualties, of which 7 thousand were battle deaths. The Battles of Shiloh, Bull Run (Second), Antietam, Stones River and Chancellorsville all have very similar casualty counts, between 22.5 and 24 thousand casualties each, although it should be noted that the Battle of Antietam took place in a single day, and with 22,717 casualties it is the bloodiest day in U.S. history. The Battles of Chickamauga, the Wilderness and Spotsylvania, all had approximately 30 to 35 thousand casualties each, whereas the Siege of Vicksburg is the only entry on this list with less than 20 thousand casualties.
The Siege of Vicksburg was one of the most tactically important victories for the Union in the American Civil War. Victory helped give the Union control of the Mississippi River, while cutting off a major supply line for the Union forces. When Major General Ulysses S. Grant's Union troops tried taking the fortress by force, in mid-May 1863, they were twice pushed back with heavy casualties. Instead of sending his men to try a third time, Grant then used artillery to besiege the city on a daily basis and cut off all supply networks into the city. The inhabitants survived for another forty days before running out of provisions, (many reports claim the starving inhabitants had to resort to eating dogs and rats to survive) and surrendered on July 4. Interestingly, the legacy of the siege meant Independence Day was not celebrated in Vicksburg again until after the Second World War, 81 years later.
The Battle of the Wilderness was the first encounter of Lieutenant General Ulysses S. Grant and General Robert E. Lee's forces, during Grant's Overland Campaign in May and June 1864 during the American Civil War. This campaign took place over eight weeks in Virginia, as Grant's union troops pushed the Confederate forces further back through Virginia, culminating in the Sieges of Richmond and Petersburg. Although the Union sustained heavier casualties than the Confederacy, they emerged victorious from the campaign, as they had inflicted a higher proportion of casualties to the South. It was during this point of the war where the Union's superior numbers proved instrumental in determining the outcome of the war. The Wilderness The Battle of the Wilderness is so named as it reflects the conditions in which the battle was fought, as it took places in the dense forests of Virginia, near Spotsylvania, between May 5 and 7, 1864. The fighting took place in sporadic encounters and skirmishes, with different corps from each army intercepting one another as they navigated their way through the forest. The outcome of the battle is deemed inconclusive, with both sides suffering heavy casualties, while achieving some of their primary goals. Grant was waging a war of attrition (where the aim is to defeat one's enemy by wearing down their numbers and resources) against Lee, and was successful in taking out a large portion of his forces while slowing his retreat. In contrast, Lee's goal was to outmanoeuvre the bulk of his army to a more favorable position in order to regroup and hold out for reinforcements, with which he had some success. Aftermath The location of the battle was a major influence in the outcome, as the density of the trees and the limited lighting caused confusion among the troops and allowed more organized regiments to ambush their enemies. In total, an estimated 163 thousand men took place in the battle, with approximately thirty thousand becoming casualties. Although the Union sustained roughly seven thousand more casualties than the Confederacy, as mentioned above, their strength in numbers and their ability to replace lost soldiers was the key to their overall success. This battle was immediately followed by the Battle of Spotsylvania Court House, which lasted from May 8 to 21, 1864.
The United States military has a long history of ethnic minorities serving in its ranks, with black Americans having served as far back as the Revolutionary War. The Vietnam War took place during a period of changing race relations in the United States, with the Civil Rights Movement reaching its peak in the mid-1960s, and this too was reflected in the military. The Vietnam War was the first major conflict in which black and white troops were not formally segregated, however, discrimination did still occur with black soldiers reporting being subject to overt racism, being unjustly punished, and having fewer promotion opportunities than their white counterparts.
In the early phases of the war, black casualty rates were much higher than for other races and ethnicities, with some reports showing that black soldiers accounted for 25 percent of the casualties recorded in 1965. This declined substantially as the war progressed, however, the proportion of black service personnel among those fallen during the war was still disproportionately high, as black personnel comprised only 11 percent of the military during this era. A smaller number of other ethnic minorities were killed during the war, comprising two percent of the total.
The Battle of Shiloh took place on April 6 and 7, 1862, in southwestern Tennessee, during the American Civil War. The Union forces were led by Major General Ulysses S. Grant, while General A. S. Johnston and (later) General P. G. T. Beauregard commanded the Confederate armies. The battle began when Johnston launched a surprise attack against a Union encampment, driving them from the camp towards a sunken road that they used as their defensive line. The rebels continued to attack the Union line, but could not break down their defenses, and General Johnston was fatally wounded during the days' attacks. Command was taken over by General Beauregard late on the 6th, who decided to halt the attack overnight after seeing how drained the Confederate forces had become. This proved to be a grave mistake, however, as it allowed Union reinforcements from Ohio to arrive, and early on the 7th Grant launched his own surprise attack on the enemy, eventually overpowering and defeating them. Approximately 2,500 men died in the battle, and a further 21,000 were wounded, missing or captured, making it the bloodiest battle of the American Civil War at that time.
Of all the major battles of the American Civil War, the Battle of Stones River had the highest percentage of casualties. Approximately 76 thousand men took part in the battle, with just under one third becoming casualties. The battle itself took place at the turn of 1862-1863, and began on the morning of December 31, when both the Union army of Major General William S. Rosecrans, and the Confederate army of General Braxton Bragg, planned to attack one another, with Bragg launching his attack first and catching the Union army by surprise (much like at the Battle of Shiloh). A strong defense, quickly mounted by Brigadier General Philip Sheridan, was able to prevent a total catastrophe, and the Union were then able to establish a defensive line which held out through repeated attacks from Bragg's men. Due to the threat of Confederate cavalry and high Union casualties on the first day, Rosecrans ensured that the convoys of wounded men were heavily guarded. When Bragg saw this he assumed that the Union army was retreating, and decided not to press the attack. On the final day the tide had turned in the Union's favor, and they were able to use their strategically placed artillery to repel the Confederate army, inflicting heavy casualties in the process. Although the overall result was inconclusive, it was a morale boost for the Union, who had suffered a string of defeats in the previous battles.
Andersonville Prison was one of the largest, and most overcrowded and unsanitary prison camps during the American Civil War. For this reason, almost one third of all prisoners died while in captivity in the prison. As Confederate records were so poorly maintained, there are no complete records for the entire war, however from March until August, 1684, we know that over 7,700 Union soldiers died in captivity here. The most common causes for death were diarrhea and dysentery, and scurvy, which are both fast-spreading diseases, facilitated by poor and unhygienic living conditions. As a comparison, approximately 5.9 thousand Confederate POWs died from diarrhea or dysentery between 1861 and 1865.
The American Civil War is the conflict with the largest number of American military fatalities in history. In fact, the Civil War's death toll is comparable to all other major wars combined, the deadliest of which were the World Wars, which have a combined death toll of more than 520,000 American fatalities. The ongoing series of conflicts and interventions in the Middle East and North Africa, collectively referred to as the War on Terror in the west, has a combined death toll of more than 7,000 for the U.S. military since 2001. Other records In terms of the number of deaths per day, the American Civil War is still at the top, with an average of 425 deaths per day, while the First and Second World Wars have averages of roughly 100 and 200 fatalities per day respectively. Technically, the costliest battle in U.S. military history was the Battle of Elsenborn Ridge, which was a part of the Battle of the Bulge in the Second World War, and saw upwards of 5,000 deaths over 10 days. However, the Battle of Gettysburg had more military fatalities of American soldiers, with almost 3,200 Union deaths and over 3,900 Confederate deaths, giving a combined total of more than 7,000. The Battle of Antietam is viewed as the bloodiest day in American military history, with over 3,600 combined fatalities and almost 23,000 total casualties on September 17, 1862. Revised Civil War figures For more than a century, the total death toll of the American Civil War was generally accepted to be around 620,000, a number which was first proposed by Union historians William F. Fox and Thomas L. Livermore in 1888. This number was calculated by using enlistment figures, battle reports, and census data, however many prominent historians since then have thought the number should be higher. In 2011, historian J. David Hacker conducted further investigations and claimed that the number was closer to 750,000 (and possibly as high as 850,000). While many Civil War historians agree that this is possible, and even likely, obtaining consistently accurate figures has proven to be impossible until now; both sides were poor at keeping detailed records throughout the war, and much of the Confederacy's records were lost by the war's end. Many Confederate widows also did not register their husbands death with the authorities, as they would have then been ineligible for benefits.