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New York 105th Infantry (Union)

28 Mar 1862

New York 105th Infantry organized.

09 Aug 1862

Participated in the Battle of Cedar Mountain at Culpepper County, Virginia.

The Battle of Cedar Mountain
The Battle of Cedar Mountain

Maj. Gen. John Pope was placed in command of the newly-constituted Army of Virginia on June 26th. Pope's orders were to defend Washington DC and Union-held northern Virginia while the Army of the Potomac under Maj. Gen. George B. McClellan battled Robert E. Lee outside of Richmond.  When McClellan was defeated at the end of the Seven Days battles less than a week later, Lee turned his attention north toward Pope while McClellan regrouped his army. Pope's three army corps were arrayed in a line from th… Read More

28 Aug 1862

Participated in the Battle of Second Bull Run at Prince William County, Virginia.

The Battle of Second Bull Run
The Battle of 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

28 Aug 1862

Participated in the Battle of Thoroughfare Gap at Fauquier County, Virginia; Prince William County, Virginia.

The Battle of Thoroughfare Gap
The Battle of Thoroughfare Gap

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.  His trusted and highly capable "wing" commanders, Maj. Gen. "Stonewall" Jackson and Lieut. Gen. James Longstreet, brought Lee's army within 35 miles of the Union capital by the end of August. Jackson waited for the arriving Union army near Manassas. Longstreet, trailing Jackson by a day, met the Union d… Read More

01 Sep 1862

Participated in the Battle of Chantilly at Fairfax Co, VA.

The Battle of Chantilly
The Battle of Chantilly

Confederate Maj. Gen. "Stonewall" Jackson hoped to cut off the Union retreat from Manassas the day after the Confederate victory at the second battle fought there. Jackson's wing of Lee's army made a wide, flanking march, screened by Maj. Gen. J.E.B. Stuart's cavalry, north and then east, to take the strategically important village of Germantown. There, Maj. Gen. John Pope's only two retreat routes to Washington - the Warrenton Pike and the Little River Turnpike - converged. On September 1st, beyond Chanti… Read More

14 Sep 1862

Participated in the Battle of South Mountain at Frederick County, Maryland; Washington County, Maryland; Boonsboro, Maryland.

The Battle of South Mountain
The Battle of 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

17 Sep 1862

Assigned to the Regiment led by Colonel Howard Carroll, and Captain John C. Whiteside.

17 Sep 1862

Assigned to the Regiment led by Colonel Howard Carroll.

17 Sep 1862

Assigned to the Division led by Brigadier General James B. Ricketts.

Brigadier General James B. Ricketts

17 Sep 1862

Participated in the Battle of Antietam at Sharpsburg, Maryland.

The Battle of Antietam
The Battle of 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

13 Dec 1862

Participated in the Battle of Fredericksburg at Fredericksburg, Virginia.

The Battle of Fredericksburg
The Battle of 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

17 Mar 1863

New York 105th Infantry mustered out.