Civil War Army Organization and Order of Rank

Here is an explanation of the basic way both the Union and Confederate armies were organized. The units are listed from the largest to the smallest. The descriptions below can be considered the ideal or desired make up of the units. As the Civil War progressed, the size of the various units would change due to loss of men by disease, death, or injury. The force of men an army could bring would be added to, and subtracted from, with the ebb and flow of war.

Army – An army is the largest field force unit of military organization. The Union armies were commanded by a major general and were usually named after rivers (for example, the Army of the Potomac). The Confederate armies were commanded by a general and were usually named after the area from which they were based (for example, the Army of Northern Virginia). The way of naming the armies was not always followed by either the North or the South and exceptions can be found, sometimes or often leading to confusion.

A confusing example of the way armies were named is this example: the Union had the Army of the Tennessee, while the Confederates had the Army of Tennessee. An army was further divided into Corps.

Corps – A corps was commanded by a brigadier general or a major general for the Union, and with the Confederate States of America a corps was commanded by a lieutenant general. Major General George B. McClellan and President Abraham Lincoln organized the first corps in the Union Army in March, 1862. In 1862, the Confederates began organizing their armies using corps in September in the east, and in November in the west.

Prior to arranging corps, the Confederates had sometimes (and informally) used what were called “wings” or “grand divisions” to further group their armies. A corps would be made up of two or more divisions and each corps used a Roman numeral for its designation. The corps were also often referred to using their commander’s name.

Division – A division was the second largest unit making up an army. For the Union, a division was commanded by a brigadier general or a major general. For the Confederacy, a division was commanded by a brigadier general, and sometimes, but it was rare, by a major general. A division would be divided into usually 2 to 6 brigades. The Confederate divisions tended to be larger in manpower than the Union divisions and would be made up of more brigades. Some divisions in Confederate armies were of equal size to one corps from a Union army.

Brigade – A brigade was commanded by a brigadier general or maybe a senior colonel. A brigade was divided into regiments, usually two to six regiments to a brigade. The Confederate brigades were more apt to be made up regiments from the same state, than brigades in the Union armies.

Regiment – A regiment was commanded by a colonel. The regiment was probably the army organization unit that a soldier felt like he most belonged to. A regiment was made up of men from the same area of a state, mainly because they were raised by the various state governments. At least during the early part of the Civil War, a regiment would have men who were friends or neighbors back home, or were relatives. These regiments chose their own officers by electing them. Typically, a regiment was made up of 10 companies, with each company having 100 men. So, if mustering men for service went well, there were 1000 men in each regiment. A battalion was the name used for a regiment that had not mustered a full 10 companies with 100 men in each company.

Company – A company was commanded by a captain. With perfect army organization and strength, a company had 100 men. But because of disease and other causes (such as soldiers being killed in battle!), by 1862 a company might only have 30 to 50 soldiers. Companies were officially designated by letters or numbers, but often a company had an unofficial designation, often a nickname.

Does reading about Civil War history from long and dry academic-like books bog you down and cause you to lose interest? Would you like to read interesting stories based on facts of the Civil War, stories that inform you and move along with the war’s history? Does having to read from cover to cover tire you and cause you to drag through a history book? Would you prefer the freedom to skip around in a book and learn story-by-story about the Civil War? If you answered “yes” to any of these questions, then the factual stories in 125 Civil War Stories and Facts will help you learn Civil War history. The stories are informative and entertaining and it’s a fun way to learn about the Civil War. Do books like Civil War Trivia and Fact Book by Webb Garrison or The Civil War: Strange & Fascinating Facts by Burke Davis interest you? Then you will find 125 Civil War Stories and Facts follows in their tradition of providing the reader with rich and interesting information about the Civil War. Available as a Kindle device e-book or as a paperback. Get 125 Civil War Stories and Facts now!

 

Civil War Army Organization

Shown below is a chart to help clarify Civil War army organization somewhat. The soldiers shown in the background are members of the Petersburg, Virginia Detachment of the 3d Indiana Cavalry.

Civil War Army Organization

Order of Rank

Listed from top to bottom are the highest ranks of officers and gentlemen, all the way down to the lowly, but backbone of the army, private.

  • General
  • Lieutenant General
  • Major General
  • Brigadier General
  • Colonel
  • Lieutenant Colonel
  • Major
  • Captain
  • First Lieutenant
  • Second Lieutenant
  • Sergeant
  • Corporal
  • Private

Civil War Army Organization

By Civil War Trust Historian Garry Adelman


My book 501 Civil War Quotes and Notes features quotes made before, during, and after the Civil War. Each quote has an informative note to explain the circumstances and background of the quote. Learn Civil War history from the spoken words and writings of the military commanders, political leaders, the Billy Yanks and Johnny Rebs who fought in the battles, the abolitionists who strove for the freedom of the slaves, the descriptions of battles, and the citizens who suffered at home. Their voices tell us the who, what, where, when, and why of the Civil War. Available as a Kindle device e-book or as a paperback. Get 501 Civil War Quotes and Notes now!

Civil War Speech

Civil War Words, Slang, And Phrases

The soldiers of the Civil War had their own way of saying things. The words, slang, and phrases of Billy Yank (a Union soldier), Johnny Reb (a Confederate soldier), and the civilians of the 19th century are unique and strange to our modern-day ears. The language of Civil War soldiers was rich and colorful, it reflected their lives and times.

It is natural for language to change and develop over time as new words are added to the dictionary. For example, your Learn Civil War History BlogMaster can sometimes be accused of being a mouse potato. The term “mouse potato” is a recent addition to the Merriam-Webster Dictionary. It means I spend too much time at the computer, just as a couch potato spends too much time sitting on the couch watching television.

If you could, can you imagine asking someone from Civil War times what the words Internet and BlogMaster mean! Words also fall from use and become forgotten. Some words used during the Civil War are not often heard or understood today.

Here’s a brief story I’ve written that uses lots of Civil War speech and jargon. See if you can understand what my imaginary Jonathan (a Yankee) soldier is talking about. I’ll translate it further below:

Civil War Jargon

The Latin farmers and I came upon somebody’s darlin, he was from the so-called seceded states and probably a Tar Heel. He had been a snake in the grass, but was now a true lead mine after meeting up with some of us Lincoln hirelings. He was a tough looking butternut, there certainly would have been no social intercourse with him and he looked liked he’d been on partial rations for too long. He was messed up good, a victim of solid shot from a smoothbore, he wasn’t lucky enough to experience a spent ball. Now he would not have to worry about contracting soldier’s disease, or becoming a pickled sardine. Maybe he served under Square Box or Lee’s Old War Horse, maybe too, Little Powell. They all had been through here. We had whipped them good and when the Long-Legged Donkey hears about it he will be glad, yes sir, Long Shanks will be joyful. By the looks of him, he could too have been part of Old Tom Fool’s Lousy 33d, but Old Jack has been sacred dust since Chancellorsville.

Anyway, we were hungry so we sot down for some Lincoln pie, old bull, and coffee, but had no desire to get some lobscouse going. Despite the miasma of this area, we’ll set up a merrimack and break out some oh-be-joyful and get corned. If we get time later on, maybe we’ll have ourselves a louse race. Better get a fire going and try to dry out our mudscows. We should be safe from Old Granny and Old Jubilee tonight. We are proud one-hundred-day-men and serving under Old Four Eyes, as far as we’re concerned there is no one better than Old Snapping Turtle because he is the biggest toad in the puddle. Maybe tomorrow we’ll open the ball. We intend to exfluncticate the graybacks. I snore, I’ll spend all night slapping gallnippers!

I only hope I won’t have to deal with Virginia quickstep tomorrow, like I did today. It sure made things all-overish for me and I almost had a conniption fit dealing with it. Sakes alive, it’s not your funeral. I’ve been like a book here, but I’ll shut pan now.

Translation

The well-educated German immigrants fighting in the Union Army and I came upon an unidentified corpse, he was a Confederate and probably from North Carolina. He had been trying to camouflage himself, but now was dead with several wounds after meeting up with some of us Union soldiers. He was a tough looking Southern soldier, there certainly would have been no pleasant conversation with him and he looked liked he’d been on less than the daily allowance of food for too long. He was messed up good, a victim of chunks of cast iron from a cannon or other firearm without rifling, he wasn’t lucky enough to experience a projectile or bullet that did not have enough velocity to cause any damage. Now he would not have to worry about contracting a chronic ailment suffered by veterans such as morphine or opium addiction, or becoming a prisoner of war who had been imprisoned for many months. Maybe he served under General Thomas Jonathan ’’Stonewall’’ Jackson or General James Longstreet, maybe too, General Ambrose Powell Hill. They all had been through here. We had beat them good and when President Abraham Lincoln hears about it he will be glad, yes sir, Lincoln will be joyful. By the looks of him, he could too have been part of Stonewall Jackson’s 33d Virginia regiment, part of the Army of Northern Virginia, but Stonewall Jackson has been a corpse since Chancellorsville.

Anyway, we were hungry so we sat down for some hardtack, salted horse meat, and coffee, but had no desire to get some stew of hardtack, vegetables, and salted meat going. Despite the unpleasant air of this area, we’ll set up a lean-to for one night’s use and break out some hard liquor and get drunk. If we get time later on, maybe we’ll have ourselves a contest where body lice are placed on the center of a saucer or plate, and wagers are taken as to which louse will scurry and fall of the edge of the plate or saucer first. Better get a fire going and try to dry out our shoes [shoes were also often called brogans]. We should be safe from Confederate Generals Robert E. Lee and Jubal Early tonight. We are proud to be Pennsylvanians who signed up for one hundred days’ service after Gettysburg and serving under General George G. Meade, as far as we’re concerned there is no one better than Meade because he’s the most important person in our group. Maybe tomorrow we’ll start a battle. We intend to utterly destroy the Confederates. I swear, I’ll spend all night slapping large mosquitos!

I only hope I won’t have to deal with diarrhea tomorrow, like I did today. It sure made things uncomfortable for me and I almost had a fit of hysteria dealing with it. Good heavens, it’s none of your concern. I’ve been eloquent here, but I’ll shut up now.

My book 501 Civil War Quotes and Notes features quotes made before, during, and after the Civil War. Each quote has an informative note to explain the circumstances and background of the quote. Learn Civil War history from the spoken words and writings of the military commanders, political leaders, the Billy Yanks and Johnny Rebs who fought in the battles, the abolitionists who strove for the freedom of the slaves, the descriptions of battles, and the citizens who suffered at home. Their voices tell us the who, what, where, when, and why of the Civil War. Available as a Kindle device e-book or as a paperback. Get 501 Civil War Quotes and Notes now!