Teaching Materials
Ask a Master Teacher
Lesson Plan Gateway
Lesson Plan Reviews
State Standards
Teaching Guides
Digital Classroom
Ask a Digital Historian
Tech for Teachers
Beyond the Chalkboard
History Content
Ask a Historian
Beyond the Textbook
History Content Gateway
History in Multimedia
Museums and Historic Sites
National Resources
Website Reviews
Issues and Research
Report on the State of History Education
Research Briefs
Best Practices
Examples of Historical Thinking
Teaching in Action
Teaching with Textbooks
Using Primary Sources
TAH Projects
Lessons Learned
Project Directors Conference
Project Spotlight
TAH Projects
Technical Working Group
Research Advisors
Teacher Representatives
Quiz Rules
Teaching History.org logo and contact info

The American Civil War: Total or Just?

photographic print on stereo card, On the lines near Atlanta, 1864, George N. Ba

Were there any international rules of war at the time of the American Civil War? When the policy of total war was put into practice, was there any 19th-century type version of the Geneva Conventions in place? What was the United States' official stance on a "just war" or didn't we subscribe to that then?


Instead of binding international rules or conventions, the major pressure for armies to behave responsibly in wartime in the mid-19th century came from the philosophical and religious beliefs behind the theory of “just war.” Drawing on the writings of St. Augustine and Thomas Aquinas, scholars such as Francisco de Vitoria and Hugo Grotius began to systematize the various aspects of the just war theory in the 16th and 17th centuries. Most Americans encountered the ideas of just war through the writings of Emerich de Vattel, a Swiss-born theorist whose 1758 Law of Nations explained when nations could legitimately resort to armed conflict and how they could behave once engaged. The just war theory (then and now) does not seek to eliminate war but to establish uniform rules that will limit the scope of conflicts, especially the practice of lethal violence and property destruction against innocent non-combatants. In common with European military and political leaders, most Americans on both sides of the Civil War conflict were familiar with the guiding principles, if not the details, of the just war doctrine.

Most Americans on both sides of the Civil War conflict were familiar with the guiding principles, if not the details, of the just war doctrine.

It is important to note that when the phrase “total war” is applied to the U.S. Civil War it has a very different meaning than when it is used to describe 20th-century conflicts. In the latter case, total war indicates the use of air power and strategic bombing to disable an enemy’s infrastructure—roads, power plants, etc.—but also to target whole cities and the civilian populations within them. This form of total war produces indiscriminate use of lethal force, as the millions of non-combatant deaths in both theaters of World War II attest. In the Civil War, by contrast, we can see that both sides selected the targets of lethal violence with fairly high precision. Actors on both sides committed atrocities and sometimes violated the rules of war, but compared to other conflicts of a similar nature civilians suffered relatively little direct physical harm. Although many of the Civil War’s participants conceptualized the conflict as a total war, they did so largely because the war demanded (at least for the South) that all of the nation’s resources be devoted to fighting the war. However, both armies did consume and destroy vital resources, leaving the citizenry to suffer as a result. The policy of logistical devastation practiced by Grant and Sherman late in the war was consistent with just war theory.

In 1863, the U.S. government published General Order No. 100, “Instructions for the Government of the Armies of the United States in the Field.” Written by Francis Lieber, the German-born jurist and political philosopher, this manual was widely distributed and read within both the United and Confederate States. Lieber drew on the principles of just war and the work of men like Vattel and Grotius to craft concrete policies for the army. Critics focused mostly on the loopholes (which were ample) but the code represented the first legal definitions for many of the concepts that had circulated under the mantle of just war theory for centuries. Historians disagree about how much credit or blame should be given to Lieber and the code for the patterns of violence that emerged in the conflict in 1864–1865. Most would agree that Lieber’s code influenced the drafting of the first Geneva Convention in 1864 and helped to bring greater rigor and uniformity to the protection of non-combatants in wartime.


Grimsley, Mark. The Hard Hand of War: Union Military Policy Toward Southern
Civilians, 1861–1865
. Cambridge: Cambridge UP, 1995.

Hsieh, Wayne. “Total War and the American Civil War Reconsidered: The End of an Outdated Master Narrative.” Journal of the Civil War Era 1 (Fall 2011): 394–408.

Neely, Mark. The Civil War and the Limits of the Destruction. Cambridge: Harvard UP, 2007.

Stout, Harry S. Upon the Altar of the Nation: A Moral History of the Civil War. New York: Vintage, 2006.

By the time of the Civil War,

By the time of the Civil War, especially Grant's 'Unconditional Surrender' policy and Sherman's 'March to the Sea', the mid-19th-century concept of 'total war' would have been perceived not only by Vattel's 1758 doctrine but by von Clauswitz, Jomini, Napoleon, Sun-Tzu (in a round-the-way manner), as well as by what Greek, Roman, Hannibalian, and other military strategists of the past, whose theorems were taught not only in Europe's miltary academies but in West Point; a place where both Union and Confederate commanders attended. The 'total war' concept would be reminiscent to a controlled chaos, such as living off the land in enemy territory, on the one hand, and releasing the berserkers to pillage the land. In short, I would agree with the Civil war as being just and total albeit the cost for the victory.

Post new comment

  • Web page addresses and e-mail addresses turn into links automatically.
  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <b> <i>
  • Lines and paragraphs break automatically.

More information about formatting options

Enter the characters shown in the image.