June 20, 1863 – Federal and Confederate cavalries dueled as the Confederate Army of Northern Virginia entered Pennsylvania and panic gripped the region.
With a full-scale Confederate invasion now imminent, Pennsylvania Governor Andrew Curtin and Major General Darius N. Couch, commanding the Department of the Susquehanna, frantically called for 30-day militia volunteers. However, Curtin could not accept blacks because, under Federal law, they could only be inducted in the Federal army, not the state militia, and only for three years’ service, not 30 days.
Secretary of War Edwin M. Stanton initially directed Couch “to receive into service any volunteer troops that may be offered, without regard to color,” but then he realized the political trouble with recruiting blacks and told Couch that in case of “any dispute about the matter, it will be better to send no more. It is well to avoid all controversy in the present juncture, as the troops can be well used elsewhere.”
In northern Virginia, Brigadier General Alfred Pleasonton’s Federal Cavalry Corps continued challenging the Confederate horsemen under Major General Jeb Stuart east of the Blue Ridge. Stuart had no infantry support, as the rest of the Confederate army had gone west into the Shenandoah Valley en route to Pennsylvania. After a day’s delay due to rain, the Federals again pressed their counterparts, driving Stuart back eight miles to Upperville. The Confederates withdrew through Ashby’s Gap in the Blue Ridge around 6 p.m.
The opposing cavalries had fought intermittently since the 16th, during which time the Federals lost 613 men while inflicting 510 casualties on the enemy. These engagements boosted Federal confidence and made Stuart seem less invincible. However, Pleasonton could not gather much intelligence based on these skirmishes, except to inform Major General Joseph Hooker, commanding the Army of the Potomac, that the Confederates were moving into the Shenandoah Valley.
As the Confederates marched through the narrow section of western Maryland, General Robert E. Lee, commanding the Army of Northern Virginia, issued General Order No. 72. This outlined how the army was to behave in enemy territory. The order was politically motivated, as Lee hoped to demonstrate his men’s high morality to foreign nations considering whether to recognize Confederate independence.
Lee directed that “no private property shall be injured or destroyed by any person belonging to or connected with the army, or taken, excepting by officers hereinafter designated,” namely, members of the “commissary, quartermaster’s, ordnance, and medical departments.”
Property owners deprived of their goods must “be paid the market price for the articles furnished.” If property owners refused to accept Confederate money (which was nearly worthless), they were to be given receipts noting the property taken and its current market value.
Lee then declared, “If any person shall remove or conceal property necessary for the use of the army, or attempt to do so, the officers hereinbefore mentioned will cause such property, and all other property belonging to such person that may be required by the army, to be seized…”
On the 22nd, the vanguard of Lieutenant General Richard Ewell’s Confederate Second Corps, consisting of Major General Robert Rodes’s infantry and Brigadier General Albert G. Jenkins’s cavalry, crossed the Pennsylvania border around 10 a.m. and advanced through Greencastle. Lee instructed Ewell:
“I think your best course will be toward the Susquehanna (River), taking the route by Emmitsburg, Chambersburg, and McConnellsburg… It will depend upon the quantity of supplies obtained in that country whether the rest of the army can follow. There may be enough for your command, but none for the others. If Harrisburg comes within your means, capture it.”
The “progress and directions” of Ewell’s advance were to be determined by the “development of circumstances.” Lee then sent discretionary orders to Stuart:
“I fear he (Hooker) will steal a march on us, and get across the Potomac before we are aware. If you find he is moving northward, and that two brigades can guard the Blue Ridge and take care of your rear, you can move with the other three into Maryland, and take position on General Ewell’s right.”
Lee sent an official order the next day, “which I wish you to see it strictly complied with.” The order went through Lieutenant General James Longstreet, whom Stuart was screening, and Longstreet added a suggestion that instead of joining Ewell, which could expose Lee’s entire movement, Stuart should ride around the rear of the Federal army. Lee approved, with the stipulation that once Hooker crossed the Potomac, Stuart “must immediately cross himself and take his place on our right flank.”
Late that night, Hooker received intelligence from Pleasonton that Longstreet’s corps was at Winchester, with Lieutenant General A.P. Hill’s following. The next day, Ewell’s advance into Pennsylvania continued, with Major General Jubal Early’s division approaching Chambersburg.
Early ordered the destruction of the nearby Caledonia Iron Works. The works were owned by Congressman Thaddeus Stevens, a Radical Republican leader who despised slavery and called for subjugating the Confederate states. When the foreman argued that the company only operated to provide housing and jobs for the locals, Early replied, “Yankees don’t do business that way. They carry on their operations to make money.”
As Early later stated, the Confederates burned all the buildings because the Federals “invariably burned such works in the South wherever they had penetrated.” Early also admitted that he destroyed the works because “in some speeches in Congress Mr. Stevens had exhibited a vindictive spirit toward the people in the South.”
Longstreet began crossing the Potomac on the 24th at Shepherdstown and Williamsport. The main part of Ewell’s corps was at Hagerstown, Maryland, with his lead elements at Chambersburg and poised to continue to the Susquehanna River.
Hooker still could not confirm whether Lee’s movement indicated a northern invasion. He notified General-in-Chief Henry W. Halleck that he would, “with all the force I can muster, strike for his line of retreat in the direction of Richmond.” However, Hooker soon received intelligence that Confederates were in force at Shepherdstown.
He dispatched Major General Oliver O. Howard’s XI Corps to Edwards’s Ferry, marking his first major move toward the Potomac. Confused by all the conflicting reports, Hooker then asked Halleck to send him orders because “outside of the Army of the Potomac I don’t know whether I am standing on my head or feet.”
CivilWarDailyGazette.com; Clark, Champ, Gettysburg: The Confederate High Tide (Alexandria, VA: Time-Life Books, 1983), p. 25-26, 28; Denney, Robert E., The Civil War Years: A Day-by-Day Chronicle (New York: Gramercy Books, 1992 [1998 edition]), p. 296; Foote, Shelby, The Civil War: A Narrative: Volume 2: Fredericksburg to Meridian (Vintage Civil War Library, Knopf Doubleday Publishing Group, Kindle Edition, 2011), p. 442; Fredriksen, John C., Civil War Almanac (New York: Checkmark Books, 2007), p. 313-15; Freeman, Douglas Southall, Lee (Scribner, Kindle Edition, 2008), Loc 5842; Long, E.B. with Long, Barbara, The Civil War Day by Day (New York: Da Capo Press, Inc., 1971), p. 370-71; McPherson, James M., Battle Cry of Freedom: The Civil War Era (Oxford History of the United States Book 6, Oxford University Press, Kindle Edition, 1988), p. 649; White, Howard Ray, Bloodstains, An Epic History of the Politics that Produced and Sustained the American Civil War and the Political Reconstruction that Followed (Southernbooks, Kindle Edition, 2012), Q263