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| Pennsylvania Infantry | |
|---|---|
| Unit name | Pennsylvania Infantry |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Type | Volunteer regiments |
| Active | 1861–1865 |
Pennsylvania Infantry
Pennsylvania raised a large, complex array of volunteer infantry regiments that served in the American Civil War, participating in campaigns across the Eastern, Western, and Trans-Mississippi Theaters. Pennsylvania units were engaged at major battles, attached to corps and armies such as the Army of the Potomac and the Army of the Cumberland, and produced prominent leaders, Medal of Honor recipients, and state-level institutions for veterans. The formations reflected Pennsylvania’s industrial, urban, and rural society and left a dense material and commemorative record in archives, monuments, and regimental histories.
Pennsylvania’s mobilization during the secession crisis and after the attack on Fort Sumter involved coordination between the Pennsylvania General Assembly, Governor Andrew Gregg Curtin, federal authorities in Washington, D.C., and local militia organizations. Early war volunteer regiments formed in Philadelphia, Pittsburgh, Allegheny County, and towns along the Susquehanna River and Allegheny Mountains. Political leaders such as Governor Curtin and military organizers like Samuel W. Black and John F. Hartranft worked with existing militia units including the Keystone State companies and ethnic organizations such as German-American societies and Irish-borough brigades to convert civic battalions into numbered regiments. Federal mustering took place at camps including Camp Curtin in Harrisburg and Camp Wilkins in Pittsburgh.
Pennsylvania infantry followed the federal volunteer regiment model of ten companies (A–K, omitting J), commanded by a colonel, lieutenant colonel, and major, with staff officers and non-commissioned officers drawn from local leaders and veterans of the Mexican–American War. Regiments were frequently assigned to brigades, divisions, and corps within the Army of the Potomac, Army of the James, Army of the Cumberland, and other field armies. Independent battalions, light infantry, and sharpshooter companies emerged from units like the 1st Pennsylvania Rifles and the 6th Pennsylvania Reserves. State authorities maintained record-keeping at the Pennsylvania State Archives and coordinated with the United States War Department for pay, equipment, and officer commissions.
Recruitment patterns reflected Pennsylvania’s immigrant communities in Philadelphia and western industrial centers in Allegheny County, with Irish, German, and Scotch-Irish volunteers prominent in many regiments. Mines and mills from the Lehigh Valley, coalfields of the Schuylkill County, and canal towns along the Susquehanna River supplied enlisted men and noncommissioned officers. Training occurred at assembly points such as Camp Curtin, Camp Wilkins, and regional rendezvous near Chambersburg; drill manuals and instruction referenced federal tactics from the United States Military Academy and the experiences of officers like George G. Meade and Daniel Sickles. Conscription later in the war under the Enrollment Act affected Pennsylvania counties, prompting draft boards and substitution practices that led to political debates in the Pennsylvania General Assembly and riots in urban wards of Philadelphia.
Pennsylvania regiments fought at major actions including the Battle of Gettysburg, the Peninsula Campaign, the Battle of Antietam, the Battle of Fredericksburg, the Battle of Chancellorsville, the Overland Campaign, the Siege of Petersburg, and western engagements such as the Battle of Stones River and the Battle of Chickamauga. Units served under commanders including George B. McClellan, Ambrose Burnside, Joseph Hooker, Ulysses S. Grant, William T. Sherman, and George H. Thomas. Pennsylvania troops also contributed to expeditions in the Shenandoah Valley under Philip Sheridan and to coastal operations near Fort Fisher and Norfolk. Tactical roles ranged from line infantry assaults at Pickett's Charge to skirmishing, entrenchment, and garrison duty during amphibious and siege operations.
Several Pennsylvania units and individuals achieved prominence: the 20th Pennsylvania Volunteers (Gettysburg) and the 69th Pennsylvania Infantry (Irish Brigade elements) are often cited for performance at Gettysburg and Antietam. Leaders such as Gouverneur K. Warren, Winfield Scott Hancock, John Reynolds, David Bell Birney, and Alexander Hays rose from Pennsylvania regiments to corps and army commands. Medal of Honor recipients from Pennsylvania units included soldiers recognized for actions at Fort Fisher, Spotsylvania Court House, and Gettysburg. Regimental chaplains, surgeons trained at Jefferson Medical College, and noncommissioned officers from industrial towns contributed to unit cohesion and battlefield medical care.
Pennsylvania regiments suffered heavy casualties across the war, with significant losses at Antietam, Gettysburg, and Petersburg. Muster rolls and casualty lists compiled in state archives document fatalities from wounds, disease, and imprisonment in Confederate prisons such as Andersonville. Decorations included brevet promotions, Medals of Honor, and state commendations recorded in war records and veterans’ publications. The wartime experience influenced Pennsylvania politics, reconstruction-era veterans’ organizations like the Grand Army of the Republic, and the formation of pension systems administered through the United States Pension Bureau and state agencies.
After Appomattox, regiments underwent mustering out at posts such as Gettysburg, Harrisburg, and Philadelphia; veterans returned to industry, railroads, coal mining in Schuylkill County, and public service. Memorialization occurred through monuments at battlefields like Gettysburg National Military Park, regimental associations, veterans’ reunions, and monuments in Harrisburg and Philadelphia. Regimental histories, compiled by veterans and published in the late nineteenth century, and archival collections at institutions including the Historical Society of Pennsylvania, the Pennsylvania State Archives, and university libraries preserve diaries, letters, and muster rolls for scholars of Civil War operations and social history.
Category:Pennsylvania in the American Civil War