Pennsylvania 33rd Volunteer Infantry (Union)

ColonelSamuel P. Heintzelman

First Bull Run

One of earliest battles of the Civil War, it introduced Americans to the idea that this would likely not be a short conflict and blood would be shed:READ MORE

Mechanicsville

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…READ MORE

Gaines' Mill

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.READ MORE

Glendale

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…READ MORE

Malvern Hill

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.READ MORE

Second Bull Run

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.READ MORE

South Mountain

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…READ MORE

MajorJohn Nyce

ColonelAlbert L. Magilton

Brigadier GeneralGeorge G. Meade

Brigadier GeneralTruman Seymour

Antietam

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.READ MORE

Fredericksburg

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.READ MORE

Lieutenant ColonelGeorge H. Covode

ColonelJohn Irvin Gregg

Brigadier GeneralDavid McM. Gregg

Trevilian Station

In June of 1864, hoping to draw attention away from Lieut. Gen. Ulysses S. Grant's movement south, destroy supply lines, and join up with Brig. Gen. David Hunter in Charlottesville, Union cavalry commander Maj. Gen. Philip Sheridan embarked on a cavalry raid. Near Trevilian Station, Virginia, he clashed with Confederate cavalry under Maj. Gens. Wade Hampton and Fitzhugh Lee. On June 11th, while Hampton's men struggled against Union forces on one road, Lee's men advancing on a parallel road fell back, allow…READ MORE