- Abner Doubleday
- Abraham Lincoln
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- Alexander McDowell McCook
- Alfred Pleasonton
- Alien and Sedition Acts
- Ambrose Everett Burnside
- Ambrose Powell Hill
- Anaconda Plan
- Andrew Johnson
- Anson George McCook
- Appomattox Campaign
- Army of Georgia
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- Army of the Northwest (CSA)
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- Army of the South
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- Army of the Tennessee
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- Army of Virginia
- Army of West Tennessee
- Army of West Virginia
- Arthur Fremantle
- Atlanta Campaign
- August Valentine Kautz
- Battle of Adairsville
- Battle of Aldie
- Battle of Amelia Springs
- Battle of Antietam
- Battle of Appomattox Court House
- Battle of Appomattox Station
- Battle of Arkansas Post
- Battle of Atlanta
- Battle of Averasboro
- Battle of Bean's Station
- Battle of Beaver Dam Creek
- Battle of Bentonville
- Battle of Big Bethel
- Battle of Big Black River Bridge
- Battle of Boonsboro
- Battle of Boonville
- Battle of Boydton Plank Road
- Battle of Brandy Station
- Battle of Brawner's Farm
- Battle of Bristoe Station
- Battle of Brown's Mill
- Battle of Buckland Mills
- Battle of Buffington Island
- Battle of Bull Run I
- Battle of Bull Run II
- Battle of Buzzard's Roost
- Battle of Campbell's Station
- Battle of Carnifex Ferry
- Battle of Cedar Creek
- Battle of Cedar Mountain
- Battle of Chaffin’s Farm and New Market Heights
- Battle of Champion Hill
- Battle of Chancellorsville
- Battle of Chantilly
- Battle of Charleston
- Battle of Chattanooga
- Battle of Cheat Mountain
- Battle of Chickamauga
- Battle of Chickasaw Bayou
- Battle of Cloyd's Mountain
- Battle of Cold Harbor
- Battle of Columbia
- Battle of Corinth II
- Battle of Corrick's Ford
- Battle of Cross Keys
- Battle of Crow Valley
- Battle of Culpeper Court House
- Battle of Cumberland Church
- Battle of Cumberland Gap
- Battle of Dallas
- Battle of Dalton I
- Battle of Dalton II
- Battle of Darbytown and New Market Roads
- Battle of Darbytown Road
- Battle of Deep Bottom I
- Battle of Deep Bottom II
- Battle of Dinwiddie Court House
- Battle of Drewry's Bluff
- Battle of Droop Mountain
- Battle of Ezra Church
- Battle of Fair Oaks and Darbytown Road
- Battle of Fisher's Hill
- Battle of Five Forks
- Battle of Fort DeRussy
- Battle of Fort Donelson
- Battle of Fort Henry
- Battle of Fort Pemberton
- Battle of Fort Stedman
- Battle of Fort Stevens
- Battle of Fort Sumter
- Battle of Franklin
- Battle of Fredericksburg
- Battle of Front Royal
- Battle of Gaines' Mill
- Battle of Gettysburg
- Battle of Gilgal Church
- Battle of Glendale
- Battle of Globe Tavern
- Battle of Glorieta Pass
- Battle of Grand Gulf
- Battle of Greenbrier River
- Battle of Hampton Roads
- Battle of Hanover
- Battle of Harpers Ferry
- Battle of Hatcher's Run
- Battle of Hatchie's Bridge
- Battle of Haw's Shop
- Battle of Helena
- Battle of High Bridge
- Battle of Hoover's Gap
- Battle of Iuka
- Battle of Jackson
- Battle of Jerusalem Plank Road
- Battle of Jonesborough
- Battle of Kennesaw Mountain
- Battle of Kernstown I
- Battle of Kessler's Cross Lanes
- Battle of Kolb's Farm
- Battle of Lewis’s Farm
- Battle of Lewisburg
- Battle of Lookout Mountain
- Battle of Lovejoy's Station
- Battle of Lynchburg
- Battle of Malvern Hill
- Battle of Manassas Gap
- Battle of Mansfield
- Battle of McDowell
- Battle of Meridian
- Battle of Middle Creek
- Battle of Middle Fork Bridge
- Battle of Middleburg
- Battle of Mill Springs
- Battle of Missionary Ridge
- Battle of Monocacy
- Battle of Monroe's Crossroads
- Battle of Munfordville
- Battle of Namozine Church
- Battle of Nashville
- Battle of New Hope Church
- Battle of New Market
- Battle of Oak Grove
- Battle of Okolona
- Battle of Opequon
- Battle of Orchard Knob
- Battle of Pea Ridge
- Battle of Peachtree Creek
- Battle of Peeble's Farm
- Battle of Perryville
- Battle of Petersburg I
- Battle of Petersburg II
- Battle of Petersburg III
- Battle of Philippi
- Battle of Pickett's Mill
- Battle of Piedmont
- Battle of Pine Mountain
- Battle of Pleasant Hill
- Battle of Port Gibson
- Battle of Port Republic
- Battle of Princeton Court House
- Battle of Rappahannock Station I
- Battle of Rappahannock Station II
- Battle of Raymond
- Battle of Ream's Station I
- Battle of Ream's Station II
- Battle of Resaca
- Battle of Rice's Station
- Battle of Rich Mountain
- Battle of Richmond
- Battle of Ringgold Gap
- Battle of Rocky Face Ridge
- Battle of Sailor's Creek
- Battle of Sappony Church
- Battle of Savage's Station
- Battle of Selma
- Battle of Seven Pines
- Battle of Shepherdstown
- Battle of Shiloh
- Battle of South Mountain
- Battle of Spotsylvania Court House
- Battle of Spring Hill
- Battle of Staunton River Bridge
- Battle of Stones River
- Battle of Sutherland's Station
- Battle of the Crater
- Battle of the Wilderness
- Battle of Tom's Brook
- Battle of Totopotomoy Creek
- Battle of Trevilian Station
- Battle of Upperville
- Battle of Utoy Creek
- Battle of Wauhatchie
- Battle of Waynesboro
- Battle of White Oak Road
- Battle of Williamsburg
- Battle of Williamsport
- Battle of Wilson's Creek
- Battle of Winchester I
- Battle of Winchester II
- Battle of Yellow Tavern
- Benjamin Franklin Butler
- Benjamin Franklin Wade
- Benjamin Harrison
- Bleeding Kansas
- Braxton Bragg
- Bristoe Campaign
- Bushrod Rust Johnson
- Carolinas Campaign
- Central Army of Kentucky
- Charles Clark
- Charles Ewing
- Charles Morris McCook
- Chattanooga Campaign
- Civil Rights Act of 1866
- Committee of Thirty-three
- Compromise of 1850
- Confederate Heartland Offensive
- Confiscation Act of 1861
- Confiscation Act of 1862
- Corwin Amendment
- Crittenden Compromise
- Daniel Edgar Sickles
- Daniel Harris Reynolds
- Daniel Harvey Hill
- Daniel McCook
- Daniel McCook, Jr.
- Darius Nash Couch
- David Hunter
- David McMurtrie Gregg
- David Sloane Stanley
- David Tod
- Department of the Ohio
- Don Carlos Buell
- Donald Chester Stith
- Earl Van Dorn
- Early's Valley Campaign
- East Tennessee Campaign
- Edmund Kirby Smith
- Edson Baldwin Olds
- Edward Moody McCook
- Edward Otho Cresap Ord
- Edward Richard Sprigg Canby
- Edwin Stanton McCook
- Edwin Vose Sumner
- Elizabeth Cady Stanton
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- Fitz John Porter
- Fitzhugh Lee
- Force Act (1833)
- Fourteenth Amendment
- Francis Jay Herron
- Francis Preston Blair, Jr.
- Franklin-Nashville Campaign
- Franz Sigel
- Frederick Douglass
- Freedman's Village
- Freedmen's Bureau
- Freeport Doctrine
- Fremont's Declaration of Martial Law
- Fugitive Slave Act of 1793
- Fugitive Slave Act of 1850
- Gag Rule
- General Orders, No. 1 (Army of Tennessee)
- General Orders, No. 1 (CSA)
- General Orders, No. 1 (Department of the Ohio, 1861)
- General Orders, No. 1 (Dept. of Ms. & E. La.) (CSA)
- General Orders, No. 1 (Division of the Mississippi, 1864)
- General Orders, No. 1 (Grand Reserve Division, AOP)
- General Orders, No. 1 (U.S. War Department)
- General Orders, No. 1 (U.S. War Department) (1864)
- General Orders, No. 1 (Virginia Forces)
- General Orders, No. 1-8 (Headquarters of Forces at Corinth, Mississippi)
- General Orders, No. 101 (Army of the Potomac)
- General Orders, No. 101 (U.S. War Department)
- General Orders, No. 103 (U.S. War Department)
- General Orders, No. 104 (U.S. War Department)
- General Orders, No. 106 (Headquarters of the Army)
- General Orders, No. 109 (U.S. War Department)
- General Orders, No. 11 (Department of the South)
- General Orders, No. 11 (U.S. War Department)
- General Orders, No. 11, (Department of the South)
- General Orders, No. 112 (U.S. War Department)
- General Orders, No. 115 (U.S. War Department)
- General Orders, No. 116 (Department No. 2, CSA)
- General Orders, No. 118 (U.S. War Department)
- General Orders, No. 12 (Headquarters of the Army)
- General Orders, No. 121 (U.S. War Department)
- General Orders, No. 122 (U.S. War Department)
- General Orders, No. 128 (U.S. War Department)
- General Orders, No. 129 (U.S. War Department)
- General Orders, No. 13 (Virginia Forces)
- General Orders, No. 134 (U.S. War Department)
- General Orders, No. 135 (U.S. War Department)
- General Orders, No. 14 (CSA)
- General Orders, No. 14 (U.S. War Department)
- General Orders, No. 141 (U.S. War Department)
- General Orders, No. 143 (Department No. 2, CSA)
- General Orders, No. 144 (U.S. War Department)
- General Orders, No. 15 (CSA)
- General Orders, No. 15. (CSA)
- General Orders, No. 151 (Department No. 2, CSA)
- General Orders, No. 159 (U.S. War Department)
- General Orders, No. 168 (U.S. War Department)
- General Orders, No. 169 (U.S. War Department)
- General Orders, No. 17 (Dept. of Ms. & E. La.) (CSA)
- General Orders, No. 17 (DNV/CSA)
- General Orders, No. 17 (U.S. War Department)
- General Orders, No. 172 (U.S. War Department)
- General Orders, No. 178 (U.S. War Department)
- General Orders, No. 18 (Headquarters of the Army)
- General Orders, No. 181 (U.S. War Department)
- General Orders, No. 182 (U.S. War Department)
- General Orders, No. 184 (Army of the Potomac)
- General Orders, No. 184 (U.S. War Department)
- General Orders, No. 186 (U.S. War Department)
- General Orders, No. 19 (U.S. War Department)
- General Orders, No. 192 (U.S. War Department)
- General Orders, No. 194 (U.S. War Department)
- General Orders, No. 199 (U.S. War Department)
- General Orders, No. 2 (Division of the Mississippi)
- General Orders, No. 2 (Headquarters of the Army)
- General Orders, No. 20 (Headquarters of the Army)
- General Orders, No. 20 (U.S. War Department)
- General Orders, No. 200 (U.S. War Department)
- General Orders, No. 203 (U.S. War Department)
- General Orders, No. 207 (U.S. War Department)
- General Orders, No. 210 (U.S. War Department)
- General Orders, No. 211 (U.S. War Department)
- General Orders, No. 214 (U.S. War Department) (1862)
- General Orders, No. 214 (U.S. War Department) (1863)
- General Orders, No. 217 (U.S. War Department) (1863)
- General Orders, No. 217 (U.S. War Department) (1864)
- General Orders, No. 218 (U.S. War Department)
- General Orders, No. 22 (Headquarters of the Army of the Mississippi CSA)
- General Orders, No. 225 (U.S. War Department)
- General Orders, No. 228 (U.S. War Department)
- General Orders, No. 229 (U.S. War Department)
- General Orders, No. 23 (CSA)
- General Orders, No. 234 (U.S. War Department)
- General Orders, No. 236 (U.S. War Department)
- General Orders, No. 237 (U.S. War Department)
- General Orders, No. 238 (U.S. War Department)
- General Orders, No. 24, Army of Tennessee (CSA)
- General Orders, No. 240 (U.S. War Department)
- General Orders, No. 248 (U.S. War Department)
- General Orders, No. 256 (U.S. War Department)
- General Orders, No. 259 (U.S. War Department)
- General Orders, No. 26 (U.S. War Department)
- General Orders, No. 263 (U.S. War Department)
- General Orders, No. 27 (Department of the Ohio)
- General Orders, No. 27 (Department of West Virginia)
- General Orders, No. 28 (U.S. War Department)
- General Orders, No. 282 (U.S. War Department)
- General Orders, No. 290 (U.S. War Department)
- General Orders, No. 293 (U.S. War Department)
- General Orders, No. 294 (U.S. War Department)
- General Orders, No. 297 (U.S. War Department)
- General Orders, No. 3 (CSA)
- General Orders, No. 3 (U.S. War Department)
- General Orders, No. 30 (U.S. War Department)
- General Orders, No. 31 (AOP/CSA)
- General Orders, No. 316 (U.S. War Department)
- General Orders, No. 337 (U.S. War Department)
- General Orders, No. 34 (U.S. War Department) (1862)
- General Orders, No. 34 (U.S. War Department) (1864)
- General Orders, No. 34 (U.S. War Department) (1892)
- General Orders, No. 349 (U.S. War Department)
- General Orders, No. 350 (U.S. War Department)
- General Orders, No. 369 (U.S. War Department)
- General Orders, No. 37 (Department of the Missouri)
- General Orders, No. 37 (Headquarters of the Forces, CSA)
- General Orders, No. 38 (Department of the Ohio)
- General Orders, No. 398 (U.S. War Department)
- General Orders, No. 4, Army of Tennessee (CSA)
- General Orders, No. 40 (U.S. War Department)
- General Orders, No. 41 (U.S. War Department)
- General Orders, No. 46 (Department of the South)
- General Orders, No. 47 (Department of the South)
- General Orders, No. 47 (U.S. War Department)
- General Orders, No. 49 (U.S. War Department)
- General Orders, No. 5 (U.S. War Department)
- General Orders, No. 51 (U.S. War Department)
- General Orders, No. 57 (U.S. War Department) (1861)
- General Orders, No. 57 (U.S. War Department) (1863)
- General Orders, No. 6 (Army of the Potomac)
- General Orders, No. 6 (Department of the Cumberland)
- General Orders, No. 62 (U.S. War Department)
- General Orders, No. 63, (U.S. War Department)
- General Orders, No. 64 (U.S. War Department)
- General Orders, No. 65 (U.S. War Department)
- General Orders, No. 66 (Army of the Potomac)
- General Orders, No. 66 (U.S. War Department)
- General Orders, No. 67 (Army of the Potomac)
- General Orders, No. 67 (U.S. Department of War)
- General Orders, No. 68 (U.S. War Department)
- General Orders, No. 7 (Department of the Cumberland)
- General Orders, No. 7 (Department of the South)
- General Orders, No. 73 (CSA)
- General Orders, No. 73 (U.S. War Department)
- General Orders, No. 74 (Department of the Susquehanna)
- General Orders, No. 75 (Headquarters Western Department, CSA)
- General Orders, No. 76 (Headquarters Western Department, CSA)
- General Orders, No. 8 (Army of the Potomac)
- General Orders, No. 80 (U.S. War Department) (1861)
- General Orders, No. 80 (U.S. War Department) (1864)
- General Orders, No. 84 (Department of the Ohio)
- General Orders, No. 87 (U.S. War Department)
- General Orders, No. 9 (U.S. War Department)
- General Orders, No. 93 (U.S. War Department)
- General Orders, No. 94 (U.S. War Department)
- General Orders, No. 96 (U.S. War Department) (1863)
- General Orders, No. 96 (U.S. War Department) (1865)
- General Orders, No. 97 (Headquarters of the Army)
- General Orders, No. 97 (U.S. War Department) (1864)
- General Orders, No. 97 (U.S. War Department) (1865)
- General Orders, No. 98 (U.S. War Department)
- George Armstrong Custer
- George Brinton McClellan
- George Crook
- George Edward Pickett
- George Gordon Meade
- George Henry Thomas
- George Hunt Pendleton
- George Stoneman
- George Sykes
- George Wythe McCook
- Gettysburg Campaign
- Gideon J. Pillow
- Gordon Granger
- Gouverneur Kemble Warren
- Halleck to Burnside Dispatch
- Halleck's Dispatch Relieving Buell
- Hardee's Farewell Address to Hardee's Corps (AoT)
- Henry Christopher McCook
- Henry Wager Halleck
- Henry Warner Slocum
- Horatio Gouverneur Wright
- Hugh Boyle Ewing
- Hugh Judson Kilpatrick
- Irish Brigade
- Iron Brigade
- Irvin McDowell
- Isaac Ingalls Stevens
- Jacob Dolson Cox
- James Abram Garfield
- James Ewell Brown "JEB" Stuart
- James Gillpatrick Blunt
- James Longstreet
- James Mitchell Ashley
- Jefferson Finis Davis
- John Alexander Logan
- John Alexander McClernand
- John Armor Bingham
- John Bell Hood
- John Brown
- John Brown's Raid on Harpers Ferry
- John Buchanan Floyd
- John Buford, Jr.
- John Cabell Breckinridge
- John Caldwell Calhoun
- John Charles Fremont
- John Clifford Pemberton
- John Fulton Reynolds
- John Gray Foster
- John James McCook (Lawyer)
- John James McCook (Physician)
- John James McCook (Professor)
- John Lincoln Clem
- John McAllister Schofield
- John Milton Chivington
- John Pope
- John Sedgwick
- Joint Committee on Reconstruction
- Joint Committee on the Conduct of the War
- Joseph Bailey
- Joseph Eggleston Johnston
- Joseph Hooker
- Joseph Wheeler
- Joshua Lawrence Chamberlain
- Joshua Reed Giddings
- Jubal Anderson Early
- Kanawha Valley Campaign
- Kansas-Nebraska Act
- Kentucky Resolutions
- Knoxville Campaign
- Latimer A. McCook
- Leonidas Polk
- Letter from Henry W. Halleck to Quincy A. Gillmore
- Lew Wallace
- Lewis Addison Armistead
- Lyman Trumbull
- Lynchburg Campaign
- Magoffin's Response to Lincoln's Call for Militia
- Manning Marius Kimmel
- Marietta Operations
- Maryland Campaign
- Meridian Campaign
- Message Announcing Robert E. Lee's Confirmation as General-in-Chief of the Armies of the Confederacy
- Message Assigning Hardee to Command of the Department of South Carolina, Georgia, and Florida
- Message Assigning Joseph E. Johnston to Command of Harpers Ferry
- Message Assigning Thomas J. Jackson to Command of Harpers Ferry
- Message from Braxton Bragg Assuming Command of the Army of the Mississippi (CSA)
- Message from Braxton Bragg Requesting to be Relieved from Command of the Army of Tennessee
- Message from Jefferson Davis Appointing Braxton Bragg to Command the Western Department
- Message from Jefferson Davis Appointing Joseph E. Johnston to Command of the Army of Tennessee
- Message from Jefferson Davis Assigning Robert E. Lee to Command the Army of Northern Virginia
- Message from Jefferson Davis Instructing Leonidas Polk to Join Forces with Joseph E. Johnston in Georgia
- Message from Jefferson Davis Relieving Braxton Bragg from Command of the Army of Tennessee
- Message from Jefferson Davis Relieving Leonidas Polk from Duty with the Army of Tennessee
- Message from Jefferson Davis Relieving William J. Hardee from Duty with the Army of Tennessee
- Message from Jefferson Davis to Hood, Hardee, and Stewart Regarding Hood's Appointment as Commander of the Army of Tennessee
- Message from John Bell Hood Announcing His Relief from Command of the Army of Tennessee
- Message from John Bell Hood Confirming He Had Assumed Command of the Department and Army of Tennessee
- Message from John Bell Hood Regarding His Appointment as Commander of the Army of Tennessee
- Message from Joseph E. Johnston Reacting to Orders to Transfer Command of the Army of Tennessee to John Bell Hood
- Message from Joseph E. Johnston Regarding Robert E. Lee's Order to Drive Back Sherman
- Message from P.G.T. Beauregard Assuming Command of the Army of the Mississippi
- Message from Richard Taylor Announcing that He Had Assumed Command of the Army of Tennessee
- Message from Robert E. Lee Assigning Joseph E. Johnston to Command of Troops in Carolinas
- Message from W.T. Sherman to William Sooy Smith
- Message from William J. Hardee Assuming Command of the Army of Tennessee
- Message from William J. Hardee Assuming Command of the Department of South Carolina, Georgia, and Florida
- Message Relieving Joseph E. Johnston from Command of the Army of Tennessee
- Message to Jefferson Davis from Hood, Hardee, and Stewart Regarding Hood's Appointment as Commander of Army of Tennessee
- Mexican-American War
- Militia Act of 1862
- Mine Run Campaign
- Missouri Compromise
- Missouri Compromise (Transcript)
- Mountain Meadows Massacre
- Nathan Bedford Forrest
- Nathaniel Lyon
- Nathaniel Prentice Banks
- Northern Virginia Campaign
- Nullification Crisis
- Official Confederate Documents of the Civil War Indexed Alpha-numerically
- Official Confederate Documents of the Civil War Indexed by Date
- Official Union Documents of the Civil War Indexed Alpha-numerically
- Official Union Documents of the Civil War Indexed by Date
- old Battle of Reams Station
- Oliver Otis Howard
- Operations at New Madrid and Island No. 10
- Order Authorizing Arrests of Persons Discouraging Enlistments
- Order To Prevent Evasion Of Military Duty And For The Suppression of Disloyal Practices
- Orders, No. --
- Ormsby MacKnight Mitchel
- Overland Campaign
- Patrick Ronayne Cleburne
- Peninsula Campaign
- Petersburg Campaign
- Philip Henry Sheridan
- Philip Kearny
- Pickett's Charge
- Pierre Gustave Toutant Beauregard
- Preliminary Emancipation Proclamation
- President Johnson's Executive Order Appointing John A. Bingham as a Special Judge-Advocate for the Prosecution of President Lincoln's Accused Assassins
- President Lincoln's Executive Order Acknowledging the Service of the Ohio National Guard Who Recently Served In the Military Force of the United States as Volunteers for One Hundred Days
- President Lincoln's Executive Order Authorizing a Draft
- President Lincoln's Executive Order Authorizing General Winfield Scott To Suspend the Writ of Habeas Corpus between New York and Washington
- President Lincoln's Executive Order Authorizing General Winfield Scott To Suspend the Writ of Habeas Corpus between Philadelphia and Washington
- President Lincoln's Executive Order Constituting the Army of Virginia
- President Lincoln's Executive Order for the "Arrest and Imprisonment of Irresponsible Newspaper Reporters and Editors"
- President Lincoln's Executive Order Mandating the Execution of Rebel Soldiers in Retaliation for the Execution of Union Soldiers
- President Lincoln's Executive Order Naming Major General Henry Halleck as General-in-Chief of All US Land Forces
- President Lincoln's Executive Order Naming Ulysses S. Grant as Commander of U.S. Armies
- President Lincoln's Executive Order Prohibiting Citizens Liable for the Draft from Leaving the United States, and Suspending the Writ of Habeas Corpus
- President Lincoln's Executive Order Relieving General G. B. McClellan and Making Other Changes
- President Lincoln's Executive Order Tendering Thanks to William T. Sherman
- President Lincoln's Letter to Joseph Hooker
- President Lincoln's Response to John C. Fremont's Emanicpation Proclamation
- President Tyler's Executive Order Appointing Winfield Scott as General of the Army
- President's War Order No. 2 (Reorganizing the Army of the Potomac)
- President's War Order No. 3
- Presidential Proclamation 104
- Presidential Proclamation 108
- Presidential Proclamation 134
- Presidential Proclamation 148
- Presidential Proclamation 153
- Presidential Proclamation 157
- Presidential Proclamation 80
- Presidential Proclamation 90
- Presidential Proclamation 93 (Preliminary Emancipation Proclamation)
- Presidential Proclamation 94
- Presidential Proclamation 95 (Emancipation Proclamation)
- Presidential Proclamation Respecting Soldiers Absent without Leave
- Price-Harney Agreement
- Price-Harney Agreement (Transcript)
- Prigg v. Pennsylvania
- Quantrill's Raiders
- Quincy Adams Gillmore
- Randal Rust
- Reconstruction Acts
- Red River Campaign
- Richard Brooke Garnett
- Richard Kidder Meade
- Richard Stoddert Ewell
- Richard Strother Taylor
- Robert Anderson
- Robert Cumming Schenck
- Robert Edward Lee
- Robert Hatton
- Robert Latimer McCook
- Robert Selden Garnett
- Roderick Sheldon McCook
- Romney Expedition
- Romney Expedition Petition
- Roswell Sabine Ripley
- Rutherford B. Hayes
- Samuel Emerson Opdycke
- Samuel Medary
- Samuel Peter Heintzelman
- Samuel Ryan Curtis
- Samuel Sullivan Cox
- Samuel Wylie Crawford
- Schofield's Dispatch to Grant Assuming Command of the Department of the Ohio
- Scott v. Sandford
- Scott v. Sandford (Transcript)
- Seven Days Battles
- Shenandoah Valley Campaign of 1862
- Shenandoah Valley Campaigns of 1864
- Sheridan's Valley Campaign
- Sherman's March to the Sea
- Siege of Corinth
- Siege of Port Hudson
- Siege of Vicksburg
- Siege of Yorktown
- Simon Bolivar Buckner
- Sojourner Truth
- South Carolina Exposition and Protest
- South Carolina Ordinance of Nullification
- Special Field Orders No. __ (Headquarters, Military Division of the West, CSA)
- Special Field Orders, No. 120 (Division of the Mississippi)
- Special Field Orders, No. 44 (Division of the Mississippi)
- Special Field Orders, No.11 (Department of the Tennessee)
- Special Orders, No. - (CSA)
- Special Orders, No. 135 (U.S. War Department)
- Special Orders, No. 149 (CSA War Dept.)
- Special Orders, No. 149 (CSA)
- Special Orders, No. 20 (Army of the Potomac)
- Special Orders, No. 22 (CSA)
- Special Orders, No. 223 (Headquarters of the Army)
- Special Orders, No. 230 (U.S. War Department)
- Special Orders, No. 240 (CSA)
- Special Orders, No. 249 (Headquarters of the Army)
- Special Orders, No. 3 (Armies of the Confederate States)
- Special Orders, No. 45 (CSA)
- Special Orders, No. 486 (AOP/CSA)
- Special Orders, No. 5 (Department of Tennessee and Georgia, CSA)
- Special Orders, No. 51 (Department of the Ohio)
- Special Orders, No. 92 (Department of the Missouri)
- Special Orders, No. 95 (Virginia Forces)
- Stand Watie
- Stanton's Dispatch Adding the State of Kentucky to the Department of the Ohio
- Stephen Arnold Douglas
- Stephen Augustus Hurlbut
- Sterling Price
- Stonewall Brigade
- Surrender at Appomattox Court House
- Surrender at Bennett Place
- Susan B. Anthony
- Tariff of 1828
- Tariff of 1832
- Tariff of 1833
- Thaddeus Stevens
- Thirteenth Amendment
- Thomas Corwin
- Thomas Ewing Jr.
- Thomas Ewing Sr.
- Thomas John Wood
- Thomas Jonathon Jackson
- Thomas Ward Custer
- Tullahoma Campaign
- Ulysses S. Grant
- Utah War
- Vicksburg Campaign
- Virginia Resolutions
- Wade Hampton III
- Wade-Davis Bill
- Washington Peace Conference
- Western Virginia Campaign
- William Babcock Hazen
- William Buel Franklin
- William Clarke Quantrill
- William Dennison, Jr.
- William F. "Baldy" Smith
- William H. French
- William Henry Fitzhugh Lee
- William Henry Seward
- William Joseph Hardee
- William Mahone
- William McKinley, Jr.
- William Nelson
- William Selby Harney
- William Sooy Smith
- William Starke Rosecrans
- William Stedman
- William Tecumseh Sherman
- William Thomas Magruder
- William Wing Loring
- Wilmot Proviso
- Wilson Shannon
- Wilson's Raid
- Wilson-Kautz Raid
- Winfield Scott
- Winfield Scott Hancock
- Yazoo Pass Expedition