Date September 17, 1862
Location Near Sharpsburg, Maryland
Confederate:
General Lee's Army of Northern Virginia was organized into two large infantry corps.[7]
The First Corps, under Maj. Gen. James Longstreet, consisted of the divisions of:
Maj. Gen. Lafayette McLaws (brigades of Brig. Gens. Joseph B. Kershaw, Howell Cobb, Paul J. Semmes, and William Barksdale).
Maj. Gen. Richard H. Anderson (brigades of Cols. Alfred Cumming, W.A. Parham, and Carnot Posey, and Brig. Gens. Lewis A. Armistead, Roger A. Pryor, and Ambrose R. Wright).
Brig. Gen. David R. Jones (brigades of Brig. Gens. Robert A. Toombs, Thomas F. Drayton, Richard B. Garnett, James L. Kemper, and Cols. Joseph T. Walker and George T. Anderson).
Brig. Gen. John G. Walker (brigades of Colonel Van H. Manning and Brig. Gen. Robert Ransom, Jr.).
Brig. Gen. John Bell Hood (brigades of Cols. William T. Wofford and Evander M. Law).
Independent brigade under Brig. Gen. Nathan G. "Shanks" Evans.
The Second Corps, under Maj. Gen. Thomas J. "Stonewall" Jackson, consisted of the divisions of:
Brig. Gen. Alexander R. Lawton (brigades of Col. Marcellus Douglass, Brig. Gen. Jubal A. Early, Col. James A. Walker, and Brig. Gen. Harry T. Hays).
Maj. Gen. A.P. Hill (the Light Division — brigades of Brig. Gens. Lawrence O'Bryan Branch, Maxcy Gregg, James J. Archer, and William Dorsey Pender, and Cols. John M. Brockenbrough and Edward L. Thomas).
Brig. Gen. John R. Jones (brigades of Cols. A.J. Grigsby, E.T.H. Warren, Bradley T. Johnson, and Brig. Gen. William E. Starke).
Maj. Gen. D.H. Hill (brigades of Brig. Gens. Roswell S. Ripley, Robert E. Rodes, Samuel Garland, Jr., George B. Anderson, and Col. Alfred H. Colquitt).
The remaining units were the Cavalry Corps, under Maj. Gen. J.E.B. Stuart, and the reserve artillery, commanded by Brig. Gen. William N. Pendleton. The Second Corps was organized with artillery attached to each division, in contrast to the First Corps, which reserved its artillery at the corps level.
Union:
Maj. Gen. George B. McClellan's Army of the Potomac, bolstered by units absorbed from John Pope's Army of Virginia, included six infantry corps.[8]
The I Corps, under Maj. Gen. Joseph Hooker, consisted of the divisions of:
Brig. Gen. Rufus King (brigades of Col. Walter Phelps and Brig. Gens. Abner Doubleday, Marsena R. Patrick, and John Gibbon).
Brig. Gen. James B. Ricketts (brigades of Brig. Gen. Abram Duryée, Col. William A. Christian, and Brig. Gen. George L. Hartsuff).
Brig. Gen. George G. Meade (brigades of Brig. Gen. Truman Seymour and Col. Thomas F. Gallagher).
The II Corps, under Maj. Gen. Edwin V. Sumner, consisted of the divisions of:
Maj. Gen. Israel B. Richardson (brigades of Brig. Gen. John C. Caldwell, Brig. Gen. Thomas F. Meagher, and Col. John R. Brooke).
Maj. Gen. John Sedgwick (brigades of Brig. Gens. Willis A. Gorman, Oliver O. Howard, and Napoleon J.T. Dana).
Brig. Gen. William H. French (brigades of Brig. Gen. Nathan Kimball, Col. Dwight Morris, and Brig. Gen. Max Weber).
The V Corps, under Maj. Gen. Fitz John Porter, consisted of the divisions of:
Maj. Gen. George W. Morell (brigades of Col. James Barnes, Brig. Gen. Charles Griffin, and Col. T.B.W. Stockton).
Brig. Gen. George Sykes (brigades of Lt. Col. Robert C. Buchanan, Major Charles S. Lovell, and Col. Gouverneur K. Warren).
Brig. Gen. Andrew A. Humphreys (brigades of Brig. Gen. Erastus B. Tyler and Col. Peter H. Allabach).
The VI Corps, under Maj. Gen. William B. Franklin, consisted of the divisions of:
Maj. Gen. Henry W. Slocum (brigades of Col. Alfred T.A. Torbert, Col. Joseph J. Bartlett, and Brig. Gen. John Newton).
Maj. Gen. William F. "Baldy" Smith (brigades of Brig. Gens. Winfield S. Hancock and William T. H. Brooks and Col. William H. Irwin).
A division from the IV Corps under Maj. Gen. Darius N. Couch (brigades of Brig. Gens. Charles Devens, Jr., Albion P. Howe, and John Cochran).
The IX Corps, under Maj. Gen. Ambrose E. Burnside, consisted of the divisions of:
Brig. Gen. Orlando B. Willcox (brigades of Cols. Benjamin C. Christ and Thomas Welsh).
Brig. Gen. Samuel D. Sturgis (brigades of Brig. Gens. James Nagel and Edward Ferrero).
Brig. Gen. Isaac P. Rodman (brigades of Cols. Harrison S. Fairchild and Edward Harland).
Kanawha Division, under Brig. Gen. Jacob D. Cox (brigades of Cols. Hugh Ewing and George Crook).
The XII Corps, under Maj. Gen. Joseph K. Mansfield, consisted of the divisions of:
Brig. Gen. Alpheus S. Williams (brigades of Brig. Gens. Samuel W. Crawford and George H. Gordon).
Brig. Gen. George S. Greene (brigades of Lt. Col. Hector Tyndale, Col. Henry J. Stainrook, and Col. William B. Goodrich).
Cavalry division of Brig. Gen. Alfred Pleasonton (brigades of Maj. Charles J. Whiting and Cols. John F. Farnsworth, Richard H. Rush, Andrew T. McReynolds, and Benjamin F. Davis).
FOR MORE DETAILS OF THE BATTLE I SUGGEST YOU VISIT THIS SITE BELOW,
