The Fourth Alabama Painting by Don Troiani

Army of Pennsylvania

Third Brigade, First Division

Brigadier General E C Williams, Pennsylvannia Volunteers
Brigadier General E A William was ordered to Hagerstown, Washington County, Maryand, by Special Orders No.125, Paragraph II, Headquarters, Department of Pennsylvania, Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861,

Seventh Pennsylvania Infantry

Col. W H Irwin

The 7th Pennsylvania Infantry was accepted in state service on 15 April, 1861, and was stationed at Camp Curtin, the Dauphin County Agricultural Society, near Harrisburg, Dauphin County, Pennsylvania, 0n 23 April, 1861.

Note: The 7th Pennsylvania Infantry was ordered to rendezvous at Harrisburg, Dauphin County, Pennsylvania, under the call for 75,000 troops to serve three months by President A Lincoln on 15 April, 1861.

Mustered in three months, Harrisburg, Dauphin County, Pennsylvania, 22 & 23 April, 1861: The 7th Pennsylvania Infantry, Companies E, F, H, and I, were mustered in United States service for three months at Harrisburg, Dauphin County, Pennsylvania, by Captain S G Simmons, 7th United States Infantry, Company H, on 22 April, 1861, and Companies A, B, C, D, G, and K on 23 April, 1861.

Organisation of 7th Pennsylvania Infantry, 23 April, 1861: Colonel W H Irwin, Lieutenant Colonel O H Rippey, Major F P Robinson; Company A, Captain M Wallace; Company B, Captain C Gary; Company C, Captain I Schreoder; Company D, Captain G S Herbst; Company E, Captain F J Robinson; Company F, Captain J Gerard; Company G, Captain A F Rightmyer; Company H, Captain R McFarland; Company I, Captain H A Zollinger; Company K, Captain W Troville

Harrisburg, Dauphin County, to Chambersburg, Franklin County, Pennsylvania, 23-24 April, 1861: The 7th Pennsylvania Infantry, under the command of Lieutenant Colonel O H Rippey, was ordered to proceed by the Cumberland Valley Railroad to Chambersburg, Franklin County, Pennsylvania on 23 April, 1861, and arrived at 10 PM on 24 April, 1861.

Note: The 7th Pennsylvania Infantry was stationed at the Franklin County Fairgrounds, on the Pittsburg Turnpike, west of Chambersburg, Franklin County, Pennsylvania, on 24 April, 1861.

J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, 26 April, 1861: The 7th Pennsylvania Infantry arrived at Camp Slifer, near J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, on 26 April, 1861.

Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, 9 May, 1861: The 7th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E C Williams, Pennsylvania Volunteers, by Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, on 9 May, 1861.

J Eberly's Farm, on the Baltimore Turnpike, one miles east of Chambersburg, to Greencastle, Franklin County, Pennsylvania, 8 June, 1861: The 7th Pennsylvania Infantry was ordered to Greencastle, Franklin County, Pennsylvania, on 8 June, 1861, and arrived one mile north of Greencastle, Franklin County, Pennsylvania, in the evening the same day.

Note: The 7th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E A Williams, Pennsylvania Volunteers, by Special Orders No.66, Paragraph I, Headquarters, Department of Pennsylvania, Chambersburg, Franklin County, Pennsylvania, on 10 June, 1861.

One mile north of Greencastle, Franklin County, Pennsylvania, to St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, 15 June, 1861: The 7th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, on 15 June, 1861, and arrived at St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, the same day.

St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport to Williamsport, Washington County, Maryland, 16 June, 1861: The 7th Pennsylvania Infantry was ordered to Williamsport, Washington County, Maryland, on 16 June, 1861, and arrived at Camp Williams, one mile east of Williamsport, Washington County, Maryland, the same day.

One mile east of Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 2-3 July, 1861: The 7th Pennsylvania Infantry was ordered across the Potomac River at Lemon's Ferry, near Williamsport, Washington County, Maryland, on 2 July, 1861, and arrived at Hoke Run, near Hainesville, Berkeley County, Virginia, in the evening the same day. The regiment was ordered to Martinsburg, Berkeley County, Virginia, in the morning on 3 July, 1861, and arrived the same day.

Martinsburg, Berkeley County, to Charlestown, Jefferson County, Virginia, 15-17 July, 1861: The 7th Pennsylvania Infantry was ordered to Bunker Hill, Berkeley County, Virginia, in the morning on 15 July, 1861, and arrived in the vicinity of Bunker Hill, Berkeley County, Virginia, the same day. The regiment was ordered to Charlestown, Jefferson County, Virginia, in the morning on 17 July, 1861, and arrived via Middleway or Smithfield, Jefferson County, Virginia, the same day.

Note: The 1st Pennsylvania Infantry and the 7th Pennsylvania Infantry, Company F, were assigned to guard a train of two hundred wagons between Martinsburg, Berkeley County, and Charlestown, Jefferson County, Virginia, on 17 July, 1861 (See the 1st Pennsylvania Infantry).

Charlestown to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, 20 July, 1861: The 7th Pennsylvania Infantry was ordered to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, on 20 July, 1861.

Note: The 7th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryand, by Special Orders No.114, Headquarters, Department of Pennsylvania, Charlestown, Jefferson County, Virginia, on 21 July, 1861.

Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, to Shepherdstown, Jefferson County, Virginia, 22 July, 1861: The 7th Pennsylvania Infantry was ordered to Shepherdstown, Jefferson County, Virginia, at 2 AM on 22 July, 1861.

Mustered out, Harrisburg, Dauphin County, Pennsylvania, 29 July, 1861: The 7th Pennsylvania Infantry was mustered out at Harrisburg, Dauphin County, Pennsylvania, on 29 July, 1861.
Mustered in United States service for three months 22 & 23 April, 1861. Arrived at Chambersburg, Franklin County, Pennsylvania, 24 April, 1861

Eighth Pennsylvania Infantry

Col. A H Emley

The 8th Pennsylvania Infantry was accepted in state service on 15 April, 1861, and was stationed at Camp Curtin, the Dauphin County Agricultural Society, near Harrisburg, Dauphin County, Pennsylvania, on 24 April, 1861.

Note: The 8th Pennsylvania Infantry was ordered to rendezvous at Harrisburg, Dauphin County, Pennsylvania, under the call for 75,000 troops to serve three months by President A Lincoln on 15 April, 1861.

Mustered in three months, Harrisburg, Dauphin County, Pennsylvania, 21, 22, 23, & 24 April, 1861: The 8th Pennsylvania Infantry, Company F, was mustered in United States service for three months at Harrisburg, Dauphin County, Pennsylvania, by Captain S G Simmons, 7th United States Infantry, Company H, on 21 April, 1861; Companies A, C, and D on 22 April, 1861; Companies E, G, H, and K on 23 April, 1861; and Company I on 24 April, 1861.

Organisation of 8th Pennsylvania Infantry, 23 April, 1861: Colonel A H Emley, Lieutenant Colonel S Bowman, Major J Phillips; Company A, Captain C Strouse; Company B, Captain H S Travis; Company C, Captain W Brisbane; Company D, Captain J Bertels; Company E, Captain J McCasey; Company F, Captain E W Finch; Company G, Captain G N Reichard; Company H, Captain H W Derby; Company I, Captain A A McKnight; Company K, Captain W W Wise

Harrisburg, Dauphin County, to Chambersburg, Franklin County, Pennsylvania, 23-24 April, 1861: The 8th Pennsylvania Infantry was ordered to proceed by the Cumberland Valley Railroad to Chambersburg, Franklin County, Pennsylvania, on 23 April, 1861, and arrived at 10 PM on 24 April, 1861.

Note: The 8th Pennsylvania Infantry was stationed at the Franklin County Fairgrounds, on the Pittsburg Turnpike, three miles west of Chambersburg, Franklin County, Pennsylvania, on 24 April, 1861.

J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, 26 April, 1861: The 8th Pennsylvania Infantry arrived at Camp Slifer, near J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, on 26 April, 1861.

Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, 9 May, 1861: The 8th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E C Williams, Pennsylvania Volunteers, by Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, on 9 May, 1861.

J Eberly's Farm, Baltimore Turnpike, one miles east of Chambersburg, to Greencastle, Franklin County, Pennsylvania, 8 June, 1861: The 8th Pennsylvania Infantry was ordered to Greencastle, Franklin County, Pennsylvania, on 8 June, 1861, and arrived one mile north of Greencastle, Franklin County, Pennsylvania, in the evening the same day.

Note: The 8th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E A Williams, Pennsylvania Volunteers, by Special Orders No.66, Paragraph I, Headquarters, Department of Pennsylvania, Chambersburg, Franklin County, Pennsylvania, on 10 June, 1861.

One mile north of Greencastle, Franklin County, Pennsylvania, to St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, 15 June, 1861: The 8th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, on 15 June, 1861, and arrived at St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, the same day.

St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, to Williamsport, Washington County, Maryland, 16 June, 1861: The 8th Pennsylvania Infantry was ordered to Williamsport, Washington County, Maryland, on 16 June, 1861, and arrived at Camp Williams, one mile east of Williamsport, Washington County, Maryland, the same day.

Note: Lieutenant Colonel S Bowman and Private E A Chase, aide de camp, 8th Pennsylvania Infantry, were captured by the 1st Virginia Cavalry, Company B, near Williamsport, Washington County, Maryland, on 19 June, 1861 (See the 1st Virginia Cavalry).

One mile east of Williamsport to Williamsport, Washington County, Maryland, 2 July, 1861: The 8th Pennsylvania Infantry, the 13th Pennsylvania Infantry, and Doubleday's Battalion Heavy Artillery were assigned to garrison duty at Williamsport, Washington County, Maryland, on 2 July, 1861.

Note: The 8th Pennsylvania Infantry, Companies A and B, and Doubleday's Battalion Heavy Artillery were ordered to Martinsburg, Berkeley County, Virginia, on 2 July, 1861, and arrived in the evening on 3 July, 1861.

Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, Companies C, D, E, F, G, H, I, & K, 6 July, 1861: The 8th Pennsylvania Infantry, Companies C, D, E, F, G, H, I, and K, were ordered to Martinsburg, Berkeley County, Virginia, on 6 July, 1861.

Martinsburg, Berkeley County, to Charlestown, Jefferson County, Virginia, 15-17 July, 1861: The 8th Pennsylvania Infantry was ordered to Bunker Hill, Berkeley County, Virginia, in the morning on 15 July, 1861, and arrived in the vicinity of Bunker Hill, Berkeley County, Virginia, the same day. The regiment was ordered to Charlestown, Jefferson County, Virginia, in the morning on 17 July, 1861, and arrived via Middleway or Smithfield, Jefferson County, Virginia, the same day.

Charlestown to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, 20 July, 1861: The 8th Pennsylvania Infantry was ordered to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, on 20 July, 1861.

Note: The 8th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryand, by Special Orders No.114, Headquarters, Department of Pennsylvania, Charlestown, Jefferson County, Virginia, on 21 July, 1861.

Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, to Shepherdstown, Jefferson County, Virginia, 22 July, 1861: The 8th Pennsylvania Infantry was ordered to Shepherdstown, Jefferson County, Virginia, at 2 AM on 22 July, 1861.

Mustered out, Harrisburg, Dauphin County, Pennsylvania, 29 July, 1861: The 8th Pennsylvania Infantry was mustered out at Harrisburg, Dauphin County, Pennsylvania, on 29 July, 1861.
Mustered in United States service for three months 21, 22, 23, & 24 April, 1861. Arrived at Chambersburg, Franklin County, Pennsylvania, 24 April, 1861

Tenth Pennsylvania Infantry

Col. S A MEREDITH

The 10th Pennsylvania Infantry was accepted in state service on 15 April, 1861, and was stationed at Camp Curtin, the Dauphin County Agricultural Society, near Harrisburg, Dauphin County, Pennsylvania, on 29 April, 1861.

Note: The 10th Pennsylvania Infantry was ordered to rendezvous at Harrisburg, Dauphin County, Pennsylvania, under the call for 75,000 troops to serve three months by President A Lincoln on 15 April, 1861.

Mustered in three months, Harrisburg, Dauphin County, Pennsylvania, 22, 23, 24, 26, & 29 April, 1861: The 10th Pennsylvania Infantry, Company G, was mustered in United States service for three months at Harrisburg, Dauphin County, Pennsylvania, by Captain S G Simmons, 7th United States Infantry, Company H, on 22 April, 1861; Company D on 23 April, 1861; Companies A, B, and C on 24 April, 1861; Companies F, H, I, and K on 26 April, 1861; and Company E on 29 April, 1861.

Organisation of 10th Pennsylvania Infantry, 29 April, 1861: Colonel SA Meredith, Lieutenant Colonel J Dickey, Major R White; Company A, Captain H A Haines; Company B, Captain J H Stover; Company C, Captain W B Lebo; Company D, Captain H A Bechtel; Company E, Captain D W Patterson; Company F, Captain E G Savage; Company G, Captain J Corroll; Company H, Captain G W Eastley; Company I, Captain H L McConnell; Company K, Captain A W Bolemus

Harrisburg, Dauphin County, to Chambersburg, Franklin County, Pennsylvania, 2 May, 1861: The 10th Pennsylvania Infantry was ordered to proceed by the Cumberland Valley Railroad to Chambersburg, Franklin County, Pennsylvania, in the morning on 2 May, 1861, and arrived at Camp Slifer, J Eberly's Farm, on Baltimore Turmpike, one mile esat of Chambersburg, Franklin County, Pennsylvania, at 9 PM the same day.

Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, 9 May, 1861: The 10th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E C Williams, Pennsylvania Volunteers, by Special Orders No.6, Division Headquarters, York, York County, Pennsylvania, on 9 May, 1861.

J Eberly's Farm, Baltimore Turnpike, one miles east of Chambersburg, to Greencastle, Franklin County, Pennsylvania, 8 June, 1861: The 10th Pennsylvania Infantry was ordered to Greencastle, Franklin County, Pennsylvania, on 8 June, 1861, and arrived one mile north of Greencastle, Cumberland County, Pennsylvania, in the evening the same day.

Note: The 10th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E A Williams, Pennsylvania Volunteers, by Special Orders No.66, Paragraph I, Headquarters, Department of Pennsylvania, Chambersburg, Franklin County, Pennsylvania, on 10 June, 1861.

One mile north of Greencastle, Franklin County, Pennsylvania, to St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, 15 June, 1861: The 10th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, on 15 June, 1861, and arrived at St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, the same day.

St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, to Williamsport, Washington County, Maryland, 16 June, 1861: The 10th Pennsylvania Infantry was ordered to Williamsport, Washington County, Maryland, on 16 June, 1861, and arrived at Camp Williams, one mile east of Williamsport, Washington County, Maryland, the same day.

Note: Six companies of the 10th Pennsylvania Infantry, under the command of Lieutenant Colonel O J Dickey, and six companies, under the command of Colonel S A Meredith and Major R White, were assigned to cover the withdrawal of the First Brigade, First Division, Army of Pennsylvania, on 18 June, 1861.

One mile east of Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 2-3 July, 1861: The 10th Pennsylvania Infantry was ordered across the Potomac River at Lemon's Ferry, near Williamsport, Washington County, Maryland, on 2 July, 1861, and arrived at Hoke Run, near Hainesville, Berkeley County, Virginia, in the evening the same day. The regiment was ordered to Martinsburg, Berkeley County, Virginia, in the morning on 3 July, 1861, and arrived the same day.

Martinsburg, Berkeley County, to Charlestown, Jefferson County, Virginia, 15-17 July, 1861: The 10th Pennsylvania Infantry was ordered to Bunker Hill, Berkeley County, Virginia, in the morning on 15 July, 1861, and arrived in the vicinity of Bunker Hill, Berkeley County, Virginia, the same day. The regiment was ordered to Charlestown, Jefferson County, Virginia, in the morning on 17 July, 1861, and arrived via Middleway or Smithfield, Jefferson County, Virginia, the same day.

Note: The 10th Pennsylvania Infantry was assigned to guard duty on the Charlestown Turnpike, between Charlestown and Halltown, Jefferson County, Virginia, in the evening on 20 July, 1861.

Charlestown to Harpers Ferry, Jefferson County, Virginia, 23 July, 1861: The 10th Pennsylvania Infantry was ordered to Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861, and arrived the same day.

Note: The 10th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, by Special Orders No.125, Paragraph I, Headquarters, Department of Pennsylvania, Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861, and arrived at Antietam Creek, on the Potomac River, opposite Funkstown, Washington County, Maryland, on 24 July, 1861.

Mustered out, Harrisburg, Dauphin County, Pennsylvania, 31 July, 1861: The 10th Pennsylvania Infantry was mustered out at Harrisburg, Dauphin County, Pennsylvania, on 31 July, 1861.
Mustered in United States service for three months 23, 24, 26, & 29 April, 1861. Arrived at Chambersburg, Franklin County, Pennsylvania, 2 May, 1861

Twentieth Pennsylvania Infantry

Col. W H Gray

The 20th Pennsylvania Infantry (formerly the Scott Legion, under the command of Captain W H Gray)was accepted in state service on 29 April, 1861, and was stationed at Philadelphia, Pennsylvania, on 30 April, 1861.

Note: The 20th Pennsylvania Infantry was ordered to rendezvous at Philadelphia, Pennsylvania, under the call for 75,000 troops to serve three months by President A Lincoln on 15 April, 1861.

Mustered in three months, Philadelphia, Pennsylvania, 30 April, 1861: The 20th Pennsylvania Infantry was mustered in United States service for three months at Philadelphia, Pennsylvania, by Captain A Pleasonton, 2nd United States Dragoons, Company H, on 30 April, 1861 (See the United States Battalion Cavalry).

Organisation of 20th Pennsylvania Infantry, 23 April, 1861: Colonel W H Gray, Lieutenant Colonel G Moore, MajorA H Tippin; Company A, Captain A S Tourison; Company B, Captain E E Wallace; Company C, Captain J Spear; Company D, Captain A H Reynolds; Company E, Captain T Hawksworth; Company F, Captain J P Carle; Company G, Captain H B Yeager; Company H, Captain J Crosson; Company I, Captain G W Todd; Company K, Captain W H Sickels

Philadelphia to Chambersburg, Franklin County, Pennsylvania, 30-31 May, 1861: The 20th Pennsylvania Infantry was ordered by to proceed by the Pennsylvania Railroad to Chambersburg, Franklin County, Pennsylvania, by Special Orders No.49, Headquarers, Department of Pennsylvania, Philadelphia, Pennsylvania, at 8 AM on 30 May, 1861, dated 28 May, 1861, and arrived by the Franklin Railroad at Camp Chambers, near C Bitner's Farm, on the Franklin Railroad, three miles south of Chambersburg, Franklin County, via Harrisburg, Dauphin County, Pennsylvania, in the morning on 31 May, 1861.

Bitner's Farm, on the Franklin Railroad, three miles south of Chambersburg, to Greencastle, Franklin County, Pennsylvania, 8 June, 1861: The 20th Pennsylvania Infantry was ordered to Greencastle, Franklin County, Pennsylvania, on 8 June, 1861, and arrived one mile north of Greencastle, Franklin County, Pennsylvania, in the evening the same day.

Note: The 20th Pennsylvania Infantry was assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E A Williams, Pennsylvania Volunteers, by Special Orders No.66, Paragraph I, Headquarters, Department of Pennsylvania, Chambersburg, Franklin County, Pennsylvania, on 10 June, 1861.

One mile north of Greencastle, Franklin County, Pennsylvania, to St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, 15 June, 1861: The 20th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, on 15 June, 1861, and arrived at St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, the same day.

St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, to Williamsport, Washington County, Maryland, 16 June, 1861: The 20th Pennsylvania Infantry was ordered to Williamsport, Washington County, Maryland, on 16 June, 1861, and arrived at Camp Williams, one mile east of Williamsport, Washington County, Maryland, the same day.

One mile east of Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 2-3 July, 1861: The 20th Pennsylvania Infantry was ordered across the Potomac River at Lemon's Ferry, near Williamsport, Washington County, Maryland, on 2 July, 1861, and arrived at Hoke Run, near Hainesville, Berkeley County, Virginia, in the evening the same day. The regiment was ordered to Martinsburg, Berkeley County, Virginia, in the morning on 3 July, 1861, and arrived the same day.

Martinsburg, Berkeley County, to Charlestown, Jefferson County, Virginia, 15-17 July, 1861: The 20th Pennsylvania Infantry was ordered to Bunker Hill, Berkeley County, Virginia, in the morning on 15 July, 1861, and arrived in the vicinity of Bunker Hill, Berkeley County, Virginia, the same day. The regiment was ordered to Charlestown, Jefferson County, Virginia, in the morning on 17 July, 1861, and arrived via Middleway or Smithfield, Jefferson County, Virginia, the same day.

Charlestown to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, 20 July, 1861: The 20th Pennsylvania Infantry was ordered to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, on 20 July, 1861.

Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, to Harpers Ferry, Jefferson County, Virginia, 23 July, 1861: The 20th Pennsylvania Infantry was ordered to Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861.

Note: The 20th Pennsylvania Infantry was ordered to Philadelphia, Pennsylvania, by Special Orders No.133, Headquarters, Department of Shenandoah, Sandy Hook, Washington County, Maryland, on 29 July, 1861.

Mustered out, Philadelphia, Pennsylvania, 6 August, 1861: The 20th Pennsylvania Infantry was mustered out at Philadelphia, Pennsylvania, on 6 August, 1861.
Mustered in United States service for three months 30 April, 1861. Arrived at Chambersburg, Franklin County, Pennsylvania, 31 May, 1861

Sources

Reminiscences of the war, or, incidents which transpired in and about Chambersburg, during the War of the Rebellion, by J Hoke

A narrative of the campaign in the Valley of the Shenandoah in 1861, by Robert Patterson

History of the Pennsylvania Volunteers, 1861-5, prepared in complience with acts of the legislation, Volume 1, by Samuel P Bates

Notes

The 7th Pennsylvania Infantry and 8th Pennsylvania Infantry arrived at Chambersburg, Franklin County, Pennsylvania, on 24 April, 1861, and were stationed at Camp Slifer, near J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, on 26 April, 1861. The 10th Pennsylvania Infantry arrived at Camp Slifer, near J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, on 2 May, 1861, and the 20th Pennsylvania Infantry at Camp Chambers, near Bitner's Farm, on the Franklin Railroad, three miles south of Chambersburg, Franklin County, Pennsylvania, in the morning on 31 May, 1861.

Note: Brigadier General E C Williams, Pennsylvannia Volunteers, was assigned to command Camp Curtin, the Agricultural Society Fairgrounds, near Harrisburg, Dauphin County Pennsylvania, on 18 April, 1861, and arrived at Camp Slifer, near J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, Franklin County, Pennsylvania, on 26 April, 1861.

J Eberly's Farm, on the Baltimore Turnpike, one mile east of Chambersburg, to Greencastle, Franklin County, Pennsylvania, 8 June, 1861: The Third Brigade, First Division, Army of Pennsylvania, was ordered to Greencastle, Franklin County, Pennsylvania, on 8 June, 1861, and arrived one mile north of Greencastle, Franklin County, Pennsylvania, in the evening the same day.

Note: The 7th Pennsylvania Infantry, the 8th Pennsylvania Infantry, the 10th Pennsylvania Infantry, and the 20th Pennsylvania Infantry were assigned to the Third Brigade, Army of Pennsylvania, under the command of Brigadier General E A Williams, Pennsylvania Volunteers, by Special Orders No.66, Paragraph I, Headquarters, Department of Pennsylvania, Chambersburg, Franklin County, Pennsylvania, on 10 June, 1861.

One mile north of Greencastle, Franklin County, Pennsylvania, to St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, 15 June, 1861: The Third Brigade, First Division, Army of Pennsylvania, was ordered to Hagerstown, Washington County, Maryland, on 15 June, 1861, and arrived at St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, Washington County, Maryland, the same day.

St James' College, on the Hagerstown Turnpike, four miles southeast of Williamsport, to Williamsport, Washington County, Maryland, 16 June, 1861: The Third Brigade, First Division, Army of Pennsylvania, was ordered to Williamsport, Washington County, Maryland, on 16 June, 1861, and arrived at Camp Williams, one mile east Williamsport, Washington County, Maryland, the same day.

One mile east of Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 2-3 July, 1861: The Third Brigade, First Division, Army of Pennsylvania, was ordered across the Potomac River at Lemon's Ferry, near Williamsport, Washington County, Maryland, on 2 July, 1861, and arrived at Hoke Run, near Martinsburg, Berkeley County, Virginia, in the evening the same day. The Third Brigade was ordered to Martinsburg, Berkeley County, Virginia, in the morning on 3 July, 1861, and arrived the same day.

Note: The 8th Pennsylvania Infantry, the 13th Pennsylvania Infantry, and Doubleday's Battalion Heavy Artillery were assigned to garrison duty at Williamsport, Washington County, Maryland, on 2 July, 1861.

Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 8th Pennsylvania Infantry, Companies A & B, 2-3 July, 1861: The 8th Pennsylvania Infantry, Companies A and B, and Doubleday's Battalion Heavy Artillery were ordered to Martinsburg, Berkeley County, Virginia, on 2 July, 1861, and arrived in the evening on 3 July, 1861 (See First Brigade, First Division, Army of Pennsylvania).

Williamsport, Washington County, Maryland, to Martinsburg, Berkeley County, Virginia, 8th Pennsylvania Infantry, Companies C, D, E, F, G, H, I, & K, 6 July, 1861: The 8th Pennsylvania Infantry, Companies C, D, E, F, G, H, I, and K, were ordered to Martinsburg, Berkeley County, Virginia, on 6 July, 1861.

Martinsburg, Berkeley County, to Charlestown, Jefferson County, Virginia, 15-17 July, 1861: The Third Brigade, First Division, Army of Pennsylvania, was ordered to Bunker Hill, Berkeley County, Virginia, in the morning on 15 July, 1861, and arrived in the vicinity of Bunker Hill, Berkeley County, Virginia, in the evening the same day. The Third Brigade was ordered to Charlestown, Jefferson County, Virginia, in the morning on 17 July, 1861, and arrived via Middleway or Smithfield, Jefferson County, Virginia, the same day

Charlestown to Keyes' Ferry, on the Shenandoah River, two miles southwest of Halltown, Jefferson County, Virginia, 20 July, 1861: The 7th Pennsylvania Infantry, the 8th Pennsylvania Infantry, and 20th Pennsylvania Infantry were ordered to Keyes' Ferry, on the Shenandoah River, two miles north of Halltown, Jefferson County, Virginia, and the 10th Pennsylvania Infantry was assigned to guard duty on the Charlestown Turnpike, between Charlestown and Halltown, Jefferson County, Virginia, in the evening on 20 July, 1861.

Note: The 7th Pennsylvania Infantry and the 8th Pennsylvania Infantry were ordered to Hagerstown, Washington County, Maryand, by Special Orders No.114, Headquarters, Department of Pennsylvania, Charlestown, Jefferson County, Virginia, on 21 July, 1861.

Keyes' Ferry, on the Shenandoah River, two miles north of Halltown, to Shepherdstown, Jefferson County, Virginia, 7th Pennsylvania Infantry & 8th Pennsylvania Infantry, 22 July, 1861: The 7th Pennsylvania Infantry and the 8th Pennsylvania Infantry was ordered to Shepherdstown, Jefferson County, Virginia, at 2 AM on 22 July, 1861.

Charlestown to Harpers Ferry, Jefferson County, Virginia, 10th Pennsylvania Infantry & 20th Pennsylvania Infantry, 23 July, 1861: The 10th Pennsylvania Infantry and the 20th Pennsylvania Infantry were ordered to Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861, and arrived the same day.

Note: Major General R Patterson, Pennsylvnia Volunteers, was discharged by General Orders No.46, Paragraph I, War Department, Adjutant General's Office, Washington, D. C., on 19 July, 1861, dated 27 July, 1861, and Brevet Major General & Brigadier General G Cadwallader, Pennsylvania Volunteers, was discharged by General Orders No.46, Paragraph I, War Department, Adjutant General's Office, Washington, D. C., on 19 July, 1861.

Army of the Shenandoah

Major General N P Banks, United States Volunteers, was assigned to command the Army of the Pennsylvania, Headquarters in the field, by General Orders No.46, Paragraph II, War Department, Adjutant General's Office, Washington, D. C., on 19 July, 1861, and arrived by the Baltimore & Ohio Railroad at Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861. He assumed command of the Department of the Shenadoah at Harpers Ferry, Jefferson County, Virginia, on 25 July, 1861.

Note: Major General J A Dix, United States Volunteers, was assigned to command the Department of Maryland, Headquarters at Baltimore City, Maryland, and the Department of Pennsylvania was renamed the Department of the Shenandoah by General Orders No.46, Paragraph II, War Department, Adjutant General's Office, Washington, D. C., on 19 July, 1861 (See the Departments of Maryland and Annapolis).

General Orders No.47, Paragragh I, War Department, Adjutant General's Office, Washington, D. C., 25 July, 1861: The counties of Washington and Allegheny in Maryland and such other parts of Virginia as may be covered by the Army in its operations were added to the Department of the Shenandoah; the counties of Pronce George, Montgomery, and Frederick were added to the Department of Washington; the remainder of Maryland and all Pennsylvania and Delaware constituted the Department of Pennsylvania, Headquarters at Baltimore City, Maryland; and the Department of Washington and the Department of Northeastern Virginia, constituted a geographical Division, Headquarters Washington, D. C., by General Orders No.47, Paragragh I, War Department, Adjutant General's Office, Washington, D. C., on 25 July, 1861.

Note: The Army of the Shenandoah was organised by General Orders No.36, Paragraph II, Headquarters, Department of the Shenandoah, Sandy Hook, Washington County, Maryland, on 29 July, 1861, and the 10th Pennsylvania Infantry was ordered to Hagerstown, Washington County, Maryland, by Special Orders No.125, Headquarters, Department of Pennsylvania, Harpers Ferry, Jefferson County, Virginia, on 23 July, 1861. The 20th Pennsylvania Infantry was ordered to Philadelphia, Pennsylvania, by Special Orders No.133, Headquarters, Department of Shenandoah, Sandy Hook, Washington County, Maryland, on 29 July, 1861.

Mustered out, Harrisburg, Dauphin County, & Philadelphia, Pennsylvania, 29 & 31 July & 6 August, 1861: The 7th Pennsylvania Infantry and the 8th Pennsylvania Infantry were mustered out at Harrisburg, Dauphin County, Pennsylvania, on 29 July, 1861; the 10th Pennsylvania Infantry on 31 July, 1861; and the 20th Pennsylvania Infantry at Philadelphia, Pennsylvania, on 6 August, 1861.

Brigadier General W H Keim, Second Division, Army of Pennsylvania: Brigadier General W H Keim, Pennsylvania Volunteers, was ordered to proceed by the Northern Central Railroad to Washington, D. C., to command the Ringgold Light Artillery, the Allen Infantry, the Logan Guards, the National Light Infantry, and the Washington Artillery at 1 PM on 18 April, 1861, and arrived at Harrisburg, Dauphin County, Pennsylvania, in the evening on 20 April, 1861 (See the 25th Pennsylvania Infantry). He was ordered to York, York County, Pennsylvania, on 6 May, 1861, and arrived at Camp Scott, near York, York County, Pennsylvania, the same day.