Pennsylvania 3rd Volunteer Infantry (Union)
20 May 1861
Pennsylvania 3rd Volunteer Infantry organized at Pennsylvania.
26 Jun 1862
Participated in the Battle of Mechanicsville at Hanover Couunty, Virginia.
Maj. Gen. George B. McClellan's Army of the Potomac remained northeast of Richmond for three weeks after the Battle of Seven Pines. The new commander of the Army of Northern Virginia, Gen. Robert E. Lee, took that time to reorganize his defenses of the capital city and receive the reinforcements of Maj. Gen. Thomas J. "Stonewall" Jackson's division from the Shenandoah Valley. After attacking Lee inconclusively at Oak Grove on June 25th, McClellan remained in place, with four of his five army corps south of…
27 Jun 1862
Participated in the Battle of Gaines' Mill at Hanover County, Virginia.
Despite his victory over the Confederates at Beaver Dam Creek on June 26th, Maj. Gen. Fitz John Porter's Fifth Corps abandoned its position early on June 27th and established a new defensive line along Boatswain's Creek, just north of the Chickahominy River.
30 Jun 1862
Participated in the Battle of Glendale at Henrico County, Virginia.
Following the rear guard action at Savage's Station on June 29th, Maj. Gen. George McClellan's Army of the Potomac continued its retreat toward the safety of Harrison's Landing on the James River. On June 30th, after five days of constant fighting, the Confederate divisions of Maj. Gens. Benjamin Huger, James Longstreet, and A.P. Hill converged on the retreating Union army in the vicinity of Glendale. Longstreet's and Hill's attacks penetrated the Union defense near Willis Church, routing Brig. Gen. George…
01 Jul 1862
Participated in the Battle of Malvern Hill at Henrico County, Virginia.
On June 30th, the retreating Federal Army of the Potomac finally stopped at the James River at the end of seven days of fighting outside of Richmond.
28 Aug 1862
Participated in the Battle of Second Bull Run at Prince William County, Virginia.
After the early summer collapse of the Union Peninsula Campaign offensive to capture Richmond, Robert E. Lee sought to move his army north and threaten Washington DC before Union forces could regroup.
14 Sep 1862
Participated in the Battle of South Mountain at Frederick County, Maryland; Washington County, Maryland; Boonsboro, Maryland.
After his success at Second Manassas, Gen. Robert E. Lee led the Army of Northern Virginia north across the Potomac River on an invasion of Maryland in September of 1862. Lee divided his army, sending a portion of it into western Maryland while Lieut. Gen. Stonewall Jackson's wing attempted to capture the Federal garrison at Harper's Ferry. The bold plan was jeopardized on September 13th when a mislaid copy of Lee's orders revealing the Confederates' plans was given to Union commander Maj. Gen. George B. M…
17 Sep 1862
Participated in the Battle of Antietam at Sharpsburg, Maryland.
The Army of the Potomac, under the command of Maj. Gen. George McClellan, mounted a series of powerful assaults against General Robert E. Lee's forces along Antietam Creek near Sharpsburg, Maryland, on September 17th, 1862.
13 Dec 1862
Participated in the Battle of Fredericksburg at Fredericksburg, Virginia.
In early November, Maj. Gen. Ambrose E. Burnside took command of the Army of the Potomac, and made immediate plans to move the army once again toward Richmond.
09 May 1864
Participated in the Battle of Cloyd's Mountain at Pulaski County, Virginia.
17 Jun 1864
Pennsylvania 3rd Volunteer Infantry mustered out at Pennsylvania.
19 Sep 1864
Participated in the Battle of Third Winchester at Frederick County, Virginia; Winchester, Virginia.
To clear the Shenandoah River valley of Confederates, Maj. Gen. Phil Sheridan moved on Winchester in mid-September 1864. Sheridan's force of over 39,000 men was more than twice the size of Maj. Gen. Jubal Early's Confederate army defending the valley. After Brig. Gen. Joseph Kershaw's division left Winchester to rejoin Robert E. Lee's army at Petersburg, Early renewed his raids on the Baltimore and Ohio Railroad at Martinsburg in the lower valley, dispersing his four remaining infantry divisions. On Septem…
19 Oct 1864
Participated in the Battle of Cedar Creek at Frederick County, Virginia; Shenandoah County, Virginia; Warren County, Virginia.
Known As: Cedar Creek, Belle Grove