Special Order 191

military order issued by Robert E. Lee during the American Civil War

Special Order 191 was issued by Robert E. Lee in early September 1862.[1] It was a handwritten order detailing Lee's planned troop movements during his Maryland Campaign intended to win the American Civil War.[2] The document was recovered by Union soldiers and passed on to Major general George B. McClellan.[2] This was a piece of intelligence few battle commanders are ever lucky enough to receive.[3] It gave the details of how Lee had weakened his forces by splitting them up into several columns. It also laid out where each part of his army was to be at any given time.[3] McClellan, usually very slow to act, moved his forces more quickly this time. By the night of September 14, 1862, Lee was no longer following his plan of attack.[4] He was now reacting to McClellan's troop movements. At this point Lee's main problem became how to keep his army from being destroyed.[4]

The Best Farm field, where Lee's lost order was found during the American Civil War



Following his success at the Second Battle of Bull Run (also called the Second Battle of Manassas)[a], Lee made plans to invade the North.[7] Lee thought that if he took the Civil War to the Union states, a major victory might convince Great Britain and France to support the South.[8] He also thought it would make the North sue for peace. This would insure the Confederate States of America could remain an independent country.[8] Lee led his Army of Northern Virginia into Maryland on September 4, 1862.[8] He concentrated his army at Frederick, Maryland, about 40 miles (64 km) northwest of Washington, D.C.[7] The story of the lost order 191 and the events of early September 1862 revolve around two sheets of paper.

September 7–9


Lee's army was camped near Frederick on September 7.[4] General J.E.B. Stuart's three cavalry brigades had been given the task of forming a screen (protective line) between the encampment and the Union Army to their east.[9] Lee met with his generals suggesting to James Longstreet that he should surround Harpers Ferry Armory and attack the large Union garrison which was threatening their supply lines to their rear.[4] Longstreet objected saying his troops needed rest from the long march.[4] He also pointed out it was a bad idea to split Lee's forces when they were so close to the enemy.[4] If the Union army discovered Lee had weakened his main force, they might attack in force. Once rested, organized and fully supplied, Lee's army could do what it wanted.[4] After the meeting, Longstreet assumed Lee had given up the risky Harpers Ferry scheme. A day or two later, Longstreet entered Lee's tent. He found Lee and General Stonewall Jackson finalizing the plan to attack Harpers Ferry.[b] Longstreet realized the plan had gone ahead without him. Reluctantly, he went along with the plan.[4] On September 9, Lee wrote out the details of the plan in Special Order 191.

Order 191 text

Special Orders, No. 191

September 9th, 1862

The Army will resume its march to-morrow, taking the Hagerstown road. General Jackson's command will form the advance, and after passing Middletown, with such portions as he may select, take the route toward Sharpsburg, cross the Potomac at the most convenient point, and by Friday night take possession of the Baltimore and Ohio Railroad, capture such of the enemy as may be at Martinsburg, and intercept such as may attempt to escape from Harper's Ferry [sic].

General Longstreeet's command will pursue the same road as far as Boonsboro, where it will halt with the reserve, supply, and baggage trains of the army.

General McLaws with his own division and that of General R.H. Anderson, will follow General Longstreet; on reaching Middletown he will take the route to Harper's Ferry, and by Friday morning possess himself of the Maryland Heights and endeavor to capture the enemy at Harper's Ferry and vicinity.

General Walker, with his division after accomplishing the object in which he is now engaged, will cross the Potomac at Check's ford, ascend its right bank to Lovettsville, take possession of Loudon Heights, if practicable, by Friday morning, Keyes Ford on his left, and the road between the end of the mountain and the Potomac on his right. He will, as far as practicable, cooperate with General McLaws and General Jackson in intercepting the retreat of the enemy.

General D.H. Hill's division will form the rearguard of the army, pursuing the road taken by the main body. The reserve artillery, ordnance, and supply trains, etc., will precede General Hill.

General Stuart will detach a squadron of cavalry to accompany the commands of Generals Longstreet, Jackson , and McLaws, and, with the main body of the cavalry, will cover the route of the army and bring up all stragglers that may have been left behind.

The commands of Generals Jackson, McLaws, and Walker, after accomplishing the objects for which they have been detached, will join the main body of the army at Boonsboro' or Hagerstown.

Each regiment of the march will habitually carry its axes in the regimental ordinance-wagons, for use of the men at their encampments, to procure wood, etc.

By command of General R.E. Lee.

R. H. Chilton, Assistant Adjutant-General. Major-General D.H. Hill, Command Division.[11]

Each of Lee's commanders received a copy of the handwritten order.[12] Hill already had been sent a copy of the order from Lee. He did not know a second copy had been sent to him from Jackson.[12] This is the copy that was lost.[c][12]

Lost order found


On September 13, while about 2 miles (3.2 km) south of Frederick, Maryland, Corporal Barton W. Mitchell of the 27th Indiana Volunteers (Union Army) found a bundle of cigars wrapped inside some paper.[2] The paper turned out to be Special Order 191. The field had recently been occupied by Confederate General Hill and the order was addressed to General Hill.[2] He gave the order to his sergeant who passed it up the chain of command to General McClellan.[2] The division's adjutant general, Samuel Pittman, was able to confirm it was the handwriting of his former colleague before the war, Robert Chilton, who was Lee's adjutant general.[13] It was in McClellan's hands the same day.

Lee had about 50,000 soldiers to McClellan's 85,000.[3] But McClellan thought Lee had 100,000 troops and was extremely reluctant to engage him.[3] McClellan now had a chance to destroy Lee's Army of Northern Virginia while it was weak and divided, if he acted quickly.[3] This unexpected piece of valuable information led the usually overcautious McClellan to commit his forces on September 14 resulting in the Battle of South Mountain.[3]

  1. Many Civil War battles have two names.[5] Federal sources named battles after the nearest creek or river.[5] Confederates named a battle after the nearest town.[5] For example, the first and second battles of Bull Run, also known as First and Second Manassas, were named for Bull Run Creek, near the town of Manassas, Virginia.[6]
  2. The plan was very risky. But both Lee and Jackson knew McClellan well.[10] For four years Jackson had been a classmate of McClellan's at West Point.[10] Both Lee and McClellan served on General Winfield Scott's staff during the Mexican–American War.[10] Lee and Jackson were depending on McClellan's excessive caution to trick him.[10]
  3. This copy is different from the copy found among the Confederate Correspondence ("Official Records," Volume XIX., Par II., p.603).[11] This copy from Jackson omitted the first two paragraphs.[11] The first contained a statement saying Confederate officers and men could not visit Fredericktown, Maryland without written permission.[11] The second paragraph gave instructions for the transport of sick and wounded men to Winchester, Virginia.[11]


  1. "General Robert E. Lee's "Lost Order" No. 191". Civil War Trust. Retrieved 3 July 2016.
  2. 2.0 2.1 2.2 2.3 2.4 Bryan Johnson (31 October 2013). "The Lost Document That Changed The Civil War". KnowledgeNuts. Retrieved 3 July 2016.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 A House Divided During the Civil War Era, eds. Rodney P Carlisle; J Geoffrey Golson (Santa Barbara, CA: ABC-CLIO, 2007), p. 60
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Donald R Jermann, Antietam: The Lost Order (Gretna, LA: Pelican Publishing Co., 2006), p. 173
  5. 5.0 5.1 5.2 Shon Powers, A Buff Looks at the American Civil War (Bloomington, IN: AuthorHouse, 2011), p. 501
  6. "Remembering the First Battle of Bull Run (Manassas)". History in the Headlines. A&E Television Networks, LLC. 21 July 2011. Retrieved 29 June 2016.
  7. 7.0 7.1 Phil Leigh (12 September 2012). "Lee's Lost Order". The New York Times. Retrieved 3 July 2016.
  8. 8.0 8.1 8.2 "South Mountain State Battlefield". Maryland Department of Natural resources. Retrieved 1 July 2016.
  9. Jeffry D. Wert, Cavalryman of the Lost Cause: A Biography of J. E. B. Stuart (New York: Simon & Schuster, 2008), p. 140
  10. 10.0 10.1 10.2 10.3 Donald R. Jermann, Civil War Battlefield Orders Gone Awry (Jefferson, NC: McFarland Company Publishers, 2012), p. 77
  11. 11.0 11.1 11.2 11.3 11.4 Lowell Boileau. "Special Orders 191". Project Plug Ugly. Retrieved 3 July 2016.
  12. 12.0 12.1 12.2 "Special Orders No. 191". Monocacy National Battlefield Maryland. National Park Service, U.S. Department of the Interior. Retrieved 3 July 2016.
  13. "1862 Union troops discover Rebels' Antietam battle plan". This Day in History. A&E Television Networks, LLC. Retrieved 3 July 2016.

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