Military leadership in the American Civil War facts for kids
Military leadership during the American Civil War was handled by both political leaders and military generals. In the United States (the Union), the President was the top commander. He appointed political leaders to run the military departments. Most of the main Union commanders had experience in the regular army before the war. Some military leaders were volunteers, and a few even came from other countries.
In the Southern Confederacy, the President was also the commander-in-chief. He had studied at West Point and fought in the Mexican-American War. Many officers from the U.S. Army, who had trained at West Point, chose to join the Confederacy. Some important Confederate leaders came from state military groups, and like the Union, some were from other countries.
The United States (The Union)


Civilian Leaders of the Union Military
President Abraham Lincoln was the top commander of the Union's armed forces during the entire war. After he was assassinated on April 14, 1865, Andrew Johnson became President.
Lincoln's first Secretary of War was Simon Cameron. Edwin M. Stanton took over this role in January 1862. Thomas A. Scott was the Assistant Secretary of War. Gideon Welles was the Secretary of the Navy, helped by Gustavus Fox.
Title | Name | Time in Office | Notes |
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Commander-in-Chief |
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March 4, 1861 - April 15, 1865 | Assassinated on April 14, 1865. |
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April 15, 1865 - March 4, 1869 | Declared the war "virtually" over on May 9, 1865. | |
Secretary of War |
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March 5, 1861 - January 14, 1862 | Resigned from his position. |
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January 20, 1862 - May 28, 1867 | Previously the U.S. Attorney General. | |
Secretary of Navy |
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March 7, 1861 - March 4, 1869 |
Union Army Generals
When the war started, the U.S. "Regular Army" was very small. It had only 1,080 officers and 15,000 enlisted soldiers. Even though many regular officers became Union generals, most stayed with their original units. However, most of the main Union commanders had served in the regular army before the war.
The top general of the U.S. Army changed during the war. The generals in charge were Winfield Scott, George B. McClellan, Henry Halleck, and finally, Ulysses S. Grant.
Commanding Generals, U.S. Army
No. | Name | Time in Office | Notes |
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1 | ![]() |
July 5, 1841 - November 1, 1861 | Retired from service. |
2 | ![]() |
November 1, 1861 - March 11, 1862 | Also led the Army of the Potomac. |
3 | Vacant | March 11, 1862 - July 23, 1862 | President Lincoln handled the duties during this time. |
4 | ![]() |
July 23, 1862 - March 9, 1864 | Became Chief of Staff in Washington D.C. |
5 | ![]() |
March 9, 1864 - March 4, 1869 | The first full-rank General in the U.S. Army. |
Many other important generals served the Union. Here are some of them:
- Robert Anderson
- Don Carlos Buell
- John Buford
- Ambrose Burnside
- Edward Canby
- Philip St. George Cooke
- Darius N. Couch
- Thomas Turpin Crittenden
- Thomas Leonidas Crittenden
- Samuel Curtis
- Abner Doubleday
- William B. Franklin
- James A. Garfield
- Quincy Adams Gillmore
- Gordon Granger
- Ulysses S. Grant
- David McMurtrie Gregg
- Henry Wager Halleck
- Winfield Scott Hancock
- William B. Hazen
- Samuel P. Heintzelman
- Joseph Hooker
- Oliver O. Howard
- Andrew A. Humphreys
- Henry Jackson Hunt
- David Hunter
- Philip Kearny
- Erasmus D. Keyes
- John McArthur
- George B. McClellan
- Alexander McDowell McCook
- Irvin McDowell
- James B. McPherson
- Joseph K. Mansfield
- George Meade
- Montgomery C. Meigs
- Wesley Merritt
- Dixon S. Miles
- Edward Ord
- Alfred Pleasonton
- John Pope
- John F. Reynolds
- William Rosecrans
- John Schofield
- Winfield Scott
- John Sedgwick
- Philip Sheridan
- William T. Sherman
- Henry W. Slocum
- Andrew Jackson Smith
- William Farrar Smith
- George Stoneman
- Edwin V. Sumner
- George Sykes
- George Henry Thomas
- Alfred Thomas Archimedes Torbert
- Gouverneur K. Warren
- James H. Wilson
- John E. Wool
Union Leaders from State Militias and Politics
Under the U.S. Constitution, each state was responsible for its own local military, called the militia. State governors appointed and promoted officers. After President Lincoln asked for 75,000 volunteer soldiers in April 1861, many state groups became known as United States Volunteers. This helped tell them apart from the regular army units.
Union generals could get two types of commissions: U.S. Army or U.S. Volunteers. Many generals held both types of commissions, but regular army rank was seen as more important.
Here are some leaders who came from state militias or political backgrounds:
- Edward D. Baker
- Nathaniel Prentice Banks
- Francis Preston Blair, Jr.
- Benjamin Franklin Butler
- Joshua Lawrence Chamberlain
- Jacob Dolson Cox
- John Adams Dix
- John C. Frémont
- Nathan Kimball
- John A. Logan
- John Alexander McClernand
- Daniel Sickles
- James B. Steedman
- Alfred Terry
- Lew Wallace
Union Officers from Other Countries and Native American Leaders
The Union Army included soldiers and leaders from many different backgrounds. Some military leaders came from countries other than the United States.
- Philippe, Comte de Paris
- Michael Corcoran
- Włodzimierz Krzyżanowski
- Thomas Francis Meagher
- Ely Parker
- Albin F. Schoepf
- Carl Schurz
- Franz Sigel
- Régis de Trobriand
- Ivan Turchaninov
The United States Navy grew very quickly during the Civil War. This helped the North greatly in blocking Confederate ports and shipping early in the war. The Navy started with an old fleet of 90 ships and lost many sailors to the Confederate Navy. However, a huge effort to build new ships, using new ideas from engineers like James Buchanan Eads and John Ericsson, helped the U.S. Navy become a powerful force.
Commanding Officer, U.S. Navy
No. | Name | Time in Office | Notes |
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- | ![]() |
March 2, 1859 – December 21, 1861 | Served as "Senior Flag Officer" until he retired. |
1 | ![]() |
December 21, 1861 - August 14, 1870 | Also commanded the West Gulf Blockading Squadron. |
Here are some other important Union naval leaders:
- John A. Dahlgren
- Charles Henry Davis
- Samuel Francis du Pont
- David Farragut
- Andrew Hull Foote
- Samuel Phillips Lee
- David Dixon Porter
- John Ancrum Winslow
- John Lorimer Worden
The Confederate States
Civilian Leaders of the Confederate Military
Jefferson Davis became the temporary president of the Confederacy on February 9, 1861. He had similar duties as commander-in-chief as President Lincoln. On November 6, 1861, Davis was officially elected President of the Confederate States of America. Alexander H. Stephens was the Vice President of the Confederate States of America.
Several men served as the Confederate Secretary of War, including Leroy Pope Walker, Judah P. Benjamin, George W. Randolph, James Seddon, and John C. Breckinridge. Stephen Mallory was the Confederate Secretary of the Navy for the entire war.
Title | Name | Time in Office | Notes |
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Commander-in-Chief |
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February 18, 1861 - May 5, 1865 | |
Vice President | ![]() |
February 11, 1861 - May 11, 1865 | |
Secretary of War |
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February 25, 1861 - September 16, 1861 | Resigned from his position. |
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September 17, 1861 - March 24, 1862 | Resigned to become Secretary of State. | |
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March 24, 1862 – November 15, 1862 | Resigned due to health issues. | |
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November 21, 1862 – February 5, 1865 | Resigned from his position. | |
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February 6, 1865 – May 10, 1865 | ||
Secretary of Navy |
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March 4, 1861 – May 2, 1865 |
Confederate Army Generals (Former U.S. Army Officers)
After the Southern states left the Union, many U.S. Army officers felt they had to be loyal to their home states. About 313 of these officers resigned from the U.S. Army and joined the Confederate Army. Confederate President Jefferson Davis, who was also a West Point graduate, valued these experienced officers highly. He made sure they were given important leadership roles.
Here are some of these former U.S. Army officers who became Confederate generals:
- Richard H. Anderson
- P.G.T. Beauregard
- Milledge Luke Bonham
- Braxton Bragg
- Simon Bolivar Buckner, Sr.
- George B. Crittenden
- Samuel Cooper
- Jubal Anderson Early
- Richard S. Ewell
- Franklin Gardner
- Robert S. Garnett
- Josiah Gorgas
- William Joseph Hardee
- Ambrose Powell Hill
- Daniel Harvey Hill
- John Bell Hood
- Thomas J. "Stonewall" Jackson
- Albert Sidney Johnston
- Joseph E. Johnston
- Robert E. Lee
- Stephen D. Lee
- Mansfield Lovell
- James Longstreet
- John B. Magruder
- Humphrey Marshall
- Dabney Herndon Maury
- John Hunt Morgan
- John C. Pemberton
- George Pickett
- Edmund Kirby Smith
- Gustavus Woodson Smith
- J.E.B. Stuart
- William B. Taliaferro
- Earl Van Dorn
- Joseph Wheeler
- Henry A. Wise
Confederate Leaders from State Militias and Politics
In the Southern states, there was a strong tradition of state military groups, especially in areas that were once frontier lands. Many important Confederate military leaders came from leading these state units.
- John C. Breckinridge
- Benjamin F. Cheatham
- Nathan Bedford Forrest
- Wade Hampton
- James L. Kemper
- Ben McCulloch
- Leonidas Polk
- Sterling Price
- Alexander P. Stewart
- Richard Taylor
Confederate Officers from Other Countries and Native American Leaders
No foreign countries sent troops to help the Confederacy directly. However, some military leaders in the Confederate army came from other nations.
- Patrick Cleburne
- Stand Watie
- Camille Armand Jules Marie, Prince de Polignac
- Raleigh E. Colston
- Collett Leventhorpe
- George St. Leger Grenfell
The Confederate Navy did not have many places to build ships. Instead, they often used captured ships or bought warships from Great Britain. The South had many rivers that ships could use. However, after the Union built a large fleet of gunboats, they quickly took control of rivers like the Mississippi and Tennessee. This made these waterways almost useless to the Confederacy.
The Confederates did take over some Union Navy ships in harbors after they left the Union. They turned a few of these into ironclad ships, like the CSS Virginia. Ships called blockade runners were built and operated by British companies to get supplies past the Union blockade. Later in the war, the Confederate Navy operated some of these. A few new ships were built or bought in Britain, such as the CSS Shenandoah and the CSS Alabama. These warships attacked commercial ships, causing a lot of damage.
Here are some important Confederate naval leaders:
- John Mercer Brooke
- Isaac Newton Brown
- Franklin Buchanan
- James Dunwoody Bulloch
- Catesby ap Roger Jones
- Matthew Fontaine Maury
- Raphael Semmes
- Josiah Tattnall III
- James Iredell Waddell