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New York 40th Infantry (Union)

1861-06-27

Organized - New York 40th Infantry - New York

1861-10-21

Battle - Ball's Bluff - Loudoun County, Virginia

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Ball's Bluff

On the evening of October 20, 1861, Union army commander George B. McClellan ordered Gen. Charles Stone to send a scouting party across the Potomac River to identify the positions of Confederate Col. Nathan Evans's troops near Leesburg. In the darkness the party's inexperienced leader, Capt. Chase Philbrick, mistook a line of trees for a line of tents, and reported that he had stumbled across an unguarded Confederate camp. Early the next day, Col. Charles Devens was sent across the river to attack the ca…READ MORE

1862-05-05

Battle - Williamsburg - York County, Virginia; James City County, Virginia; Williamsburg, Virginia

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Williamsburg

Following the Confederate withdrawal from their Yorktown position, Maj. Gen. George B. McClellan was not prepared to mount an immediate pursuit with his entire force from the siege lines he had occupied for nearly a month. Initially, he was able to send forward only a portion of his army, led by the Third Corps of Samuel P. Heitzelman, to follow Gen. Joseph E. Johnston's Confederates. Heitzelman's divisions, led by Brig. Gens. Joseph Hooker and Phil Kearny, made contact with Johnston's army four miles sout…READ MORE

1862-05-31

Leadership Change - Regiment - Colonel Edward J. Riley

1862-05-31

Battle - Seven Pines - Henrico County, Virginia

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Seven Pines

Gen. Joseph E. Johnston withdrew his army from the Virginia Peninsula toward the Confederate capital of Richmond as Maj. Gen. George B. McClellan's army pursued him. By the end of May, Johnston held a defensive position seven miles east of the city on the Richmond and York River Railroad. McClellan's army facing Johnston straddled the Chickahominy River and stretched south. Capturing the initiative from his Union foe, Johnston attempted to overwhelm two Federal corps isolated south of the river. The Confed…READ MORE

1862-06-01

Battle - Fair Oaks, Virginia

1862-06-08

Battle - Fair Oaks, Virginia

1862-06-30

Battle - Glendale - Henrico County, Virginia

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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

1862-06-30

Battle - White Oak Swamp - Henrico County, Virginia

1862-07-01

Battle - Malvern Hill - Henrico County, Virginia

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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

1862-08-28

Leadership Change - Regiment - Colonel Thomas W. Egan

1862-08-28

Leadership Change - Brigade - Brigadier General David B. Birney

Brigadier GeneralDavid B. Birney

1862-08-28

Leadership Change - Division - Major General Philip Kearny

Major GeneralPhilip Kearny

1862-08-28

Battle - Second Bull Run - Prince William County, Virginia

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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

1862-09-01

Leadership Change - Division - Brigadier General David B. Birney, and Major General Philip Kearny

Brigadier GeneralDavid B. Birney

Major GeneralPhilip Kearny

1862-09-01

Leadership Change - Division - Major General Philip Kearny

Major GeneralPhilip Kearny

1862-09-01

Battle - Chantilly - Fairfax County, Virginia

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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

1862-09-14

Battle - South Mountain - Frederick County, Maryland; Washington County, Maryland; Boonsboro, Maryland

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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

1862-09-17

Battle - Antietam - Sharpsburg, Maryland

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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

1862-12-13

Leadership Change - Regiment - Lieutenant Colonel Nelson A. Gesner

Lieutenant ColonelNelson A. Gesner

1862-12-13

Leadership Change - Brigade - Brigadier General J. H. Hobart Ward

Brigadier GeneralJ. H. Hobart Ward

1862-12-13

Leadership Change - Division - Brigadier General David B. Birney

Brigadier GeneralDavid B. Birney

1862-12-13

Leadership Change - Regiment - Lieutenant Colonel Nelson A. Gesner

Lieutenant ColonelNelson A. Gesner

1862-12-13

Battle - Fredericksburg - Fredericksburg, Virginia

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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

1863-04-30

Leadership Change - Regiment - Colonel Thomas W. Egan

1863-04-30

Battle - Chancellorsville - Spotsylvania County, Virginia

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Chancellorsville

On April 27, 1863, Maj. Gen. Joseph Hooker launched a turning movement designed to pry Robert E. Lee's Army of Northern Virginia out of its lines at Fredericksburg.READ MORE

1863-07-01

Leadership Change - Regiment - Colonel Thomas W. Egan, and Lieutenant Colonel Augustus J. Warner

ColonelThomas W. Egan

Lieutenant ColonelAugustus J. Warner

1863-07-01

Leadership Change - Brigade - Colonel P. Régis de Trobriand

1863-07-01

Leadership Change - Division - Brigadier General J. H. Hobart Ward, and Major General David B. Birney

Brigadier GeneralJ. H. Hobart Ward

Major GeneralDavid B. Birney

1863-07-01

Leadership Change - Regiment - Colonel Thomas W. Egan

1863-07-01

Leadership Change - Regiment - Lieutenant Colonel Augustus J. Warner

Lieutenant ColonelAugustus J. Warner

1863-07-01

Leadership Change - Division - Brigadier General J. H. Hobart Ward

Brigadier GeneralJ. H. Hobart Ward

1863-07-01

Battle - Gettysburg - Gettysburg, Pennsylvania

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Gettysburg

In the summer of 1863, Confederate Gen. Robert E. Lee launched his second invasion of the Northern states. Lee sought to capitalize on recent Confederate victories and defeat the Union army on Northern soil, which he hoped would force the Lincoln administration to negotiate for peace. Lee also sought to take the war out of the ravaged Virginia farmland and gather supplies for his Army of Northern Virginia. Using the Shenandoah Valley as cover for his army, Lee was pursued first by Union Maj. Gen. Joseph Ho…READ MORE

1863-10-13

Battle - First Auburn - Fauquier County, Virginia

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First Auburn

Federal and Confederate cavalry engaged at the First Battle of Auburn on October 13, and left General James Ewell Brown Stuart's men trapped. Stuart concealed 3,000 men in a ravine overnight before getting word to Lee. Lee sent General Richard S. Ewell to Stuart's aid, and his force engaged a Federal rearguard under General Gouverneur K. Warren in the Second Battle of Auburn on October 14.READ MORE

1863-10-13

Battle - Auburn, Virginia

1863-11-27

Battle - Locust Grove, Virginia

1864-04-07

Battle - Farmville - Farmville, Virginia

1864-05-05

Battle - Wilderness - Spotsylvania County, Virginia; Orange County, Virginia

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Wilderness

The first battle between Lt. Gen. Ulysses S. Grant and Gen. Robert E. Lee erupted late in the morning of May 5, 1864, as Maj. Gen. Gouverneur K. Warren's Union V Corps attacked Lt. Gen. Richard S. Ewell's Second Corps on the Orange Turnpike southwest of the old Chancellorsville battlefield. Although Federal infantry managed to break through at several points, the Confederate line held. Fighting shifted to the south as Lt. Gen. A.P. Hill's Third Corps engaged Maj. Gen. Winfield S. Hancock's II Corps and ele…READ MORE

1864-05-08

Battle - Spotsylvania Court House - Spotsylvania County, Virginia

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Spotsylvania Court House

Following the Battle of the Wilderness, Lieut. Gen. Ulysses S. Grant marched the Union army south with the hope of capturing Spotsylvania Court House and preventing Robert E. Lee's army from retreating further. Lee's Confederates, however, managed to get ahead of the Federals and block the road. Fighting began on May 8th, when the Union Fifth Corps under Maj. Gen. Gouverneur K. Warren and the Sixth Corps under Maj. Gen. John Sedgwick engaged Confederate Maj. Gen. Richard Anderson's First Corps at Laurel Hi…READ MORE

1864-05-31

Battle - Cold Harbor - Hanover County; near Mechanicsville, Virginia

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Cold Harbor

After two days of inconclusive fighting along Totopotomoy Creek northeast of Richmond, Lt. Gen. Ulysses S. Grant and Gen. Robert E. Lee turned their sights on the crossroads of Cold Harbor. Roads emanating through this critical junction led to Richmond as well as supply and reinforcement sources for the Union army. On May 31, 1864, Maj. Gen. Philip Sheridan's cavalry captured Cold Harbor. The next day, Sheridan held the crossroads against a Confederate attack. With reinforcements from both armies arriving…READ MORE

1864-06-15

Battle - Second Petersburg - Petersburg, Virginia

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Second Petersburg

As the Overland Campaign concluded, the strategic goals of Lieut. Gen. Ulysses S. Grant shifted from the defeat of Robert E. Lee's army in the field to eliminating the supply and communication routes to the Confederate capital at Richmond. The city of Petersburg, 24 miles south of Richmond, was the junction point of five railroads that supplied the entire upper James River region. Grant knew Petersburg was the key to the capture of Richmond and that Lee would be forced to defend it. Marching south from Co…READ MORE

1864-06-21

Battle - Jerusalem Plank Road - Petersburg, Virginia

1864-07-27

Battle - First Deep Bottom - Henrico County, Virginia

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First Deep Bottom

Two weeks after Union forces arrived to invest the Confederate defenders of Petersburg, the battle lines of both sides settled into a stalemate. Since Cold Harbor, Lieut. Gen. Ulysses S. Grant was reluctant to mount a large frontal attack against well-entrenched Confederates. By late June, Grant's lines covered most of the eastern approaches to Petersburg, but neither side seemed ready to risk an offensive move. Determined to break the stalemate, Grant agreed to plans to blow up part of the Confederate def…READ MORE

1864-08-18

Battle - Globe Tavern - Petersburg, Virginia

1864-10-27

Leadership Change - Brigade - Brigadier General P. Regis De Trobriand

Brigadier GeneralP. Regis De Trobriand

1864-10-27

Leadership Change - Division - undefined Bvt MG Gershom Mott

1864-10-27

Battle - Boydton Plank Road - Dinwiddie County, Virginia

1865-03-25

Leadership Change - Regiment - Lieutenant Colonel Madison M. Cannon

Lieutenant ColonelMadison M. Cannon

1865-03-25

Battle - Fort Stedman - Petersburg, Virginia

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Fort Stedman

By March of 1865, Lieut. Gen. Ulysses S. Grant's grip on the Confederate lines around Petersburg was having its desired effect. Outnumbered and weakened by disease, desertion and shortage of food and supplies, Gen. Robert E. Lee had few options. After careful study of the Union troops in his sector of the line, Maj. Gen. John B. Gordon suggested to Lee the possibility of a successful offensive strike against Grant. In front of Gordon's men, Union-held Fort Stedman seemed the best target for a Confederate a…READ MORE

1865-04-06

Battle - High Bridge - Prince Edward County, Virginia; Cumberland County, Virginia

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High Bridge

Harried mercilessly by Federal troops and continually cut off from turning south to reach Gen. Joseph Johnston's army in North Carolina, General Robert E. Lee and his army headed west along the Appomattox River, eventually arriving in Cumberland County on April 6th. Food and supplies that Lee's men desperately needed were waiting at Farmville, across the river. To get there, Lee needed to use the 2,500-foot long, 130-foot tall High Bridge, which carried the South Side Railroad over the Appomattox. A small…READ MORE

1865-04-06

Battle - Sailor's Creek - Amelia County, Virginia; Prince Edward County, Virginia; Nottoway County, Virginia

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Sailor's Creek

Five days after Robert E. Lee's men retreated from the trenches of Petersburg, cavalry under Maj. Gen. Phil Sheridan effectively cut off three separate corps of Lee's army near Sailor's Creek, a tributary of the Appomattox River, while the Union Second and Sixth Corps approached from the east. On April 6th, two brigades of Andrew H. Humphrey's Second Corps overwhelmed two brigades of Maj. Gen. John B. Gordon's division as the Confederates struggled to move their supply and artillery trains across the creek…READ MORE

1865-04-09

Battle - Appomattox Court House - Appomattox Court House, Virginia

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Appomattox Court House

Between 26,000 and 28,000 Confederate soldiers surrendered and were paroled.READ MORE

1865-06-27

Mustered Out - New York 40th Infantry - New York

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