a Detroit bank during the period when Chilton was paymaster at a nearby army post. Williams forwarded the dispatch to Major General George B. McClellan, the commander of the Army of the Potomac. McClellan was overcome with glee at learning planned Confederate troop movements and reportedly exclaimed, "Now I know what to do!" He confided to Brigadier General John Gibbon, "Here is a paper with which, if I cannot whip Bobby Lee, I will be willing to go home." Effect The National Park Service provides ample evidence that Lee did not know that McClellan had a copy of the orders until well after the Maryland Campaign was over, in spite of Lee's comments to the contrary in a 1868 letter, while also noting that two Northern newspapers reported no later than September 15 that Union officers had Lee's orders. Indeed, on the morning of September 15, 1862, the New York Herald, the North’s biggest newspaper, printed the following bulletin on the right-hand column on its front page:WASHINGTON, Sept. 14, 1862 Officers who left Frederick this morning report that a general order of General Lee was found there, directing that two columns of the rebel army should proceed by way of Middletown, one of them destined for Greencastle, Pa., with all possible expedition, and the other to proceed by way of Williamsport or Shepherdstown, at discretion, to engage the Union forces at Harper's Ferrry. [sic]The reasons this was both printed and overlooked are explored here. McClellan stopped Lee's invasion at the subsequent Battle of Antietam, but many military historians believe he failed to fully exploit the strategic advantage of the intelligence because he was concerned about a possible trap (Major General Henry W. Halleck had been concerned that "Lee might draw McClellan and the army away from Washington, then turn and attack the city") or gross overestimation of the strength of Lee's army. Legacy The hill on the Best Farm where the lost order was discovered is located outside of Frederick, Maryland, and was a key Confederate artillery position in the 1864 Battle of Monocacy. A historical marker on the Monocacy National Battlefield commemorates the finding of Special Order 191 during the Maryland Campaign. Corporal Mitchell, who found the orders, was subsequently wounded in the leg at Antietam and was discharged in 1864 due to the resulting chronic infection. He died in 1868 at the age of 52. Special Orders, No.