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New York 100th Infantry (Union)

1/1/62

Organized - New York 100th Infantry - New York

4/5/62

Battle - Siege of Yorktown (1862) - York County, Virginia; Newport News, Virginia

Siege of Yorktown (1862)
Siege of Yorktown (1862)

Most of Gen. Joseph E. Johnston's army was not on the peninsula on April 4th when Maj. Gen. George B. McClellan departed Fortress Monroe on his Peninsula Campaign. The only force opposing the Yankee advance up the peninsula toward the Confederate capital at Richmond was Maj. Gen. John B. Magruder's small force of two divisions at Yorktown behind the Warwick River. Magruder's deceptive theatrics, conspicuously parading his men back and forth behind his defenses, convinced the Federals that his works were s…READ MORE

5/5/62

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

Williamsburg
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

5/30/62

Battle - Fair Oaks, Virginia

5/31/62

Leadership Change - Regiment - Colonel James M. Brown

5/31/62

Battle - Seven Pines - Henrico County, Virginia

Seven Pines
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

6/30/62

Battle - White Oak Swamp - Henrico County, Virginia

9/13/62

Battle - Charleston (1862) - Charleston, West Virginia

7/18/63

Battle - Second Fort Wagner - Morris Island, Charleston County, South Carolina

8/17/63

Battle - Second Fort Sumter - Charleston, South Carolina

8/17/63

Battle - Second Charleston Harbor - Charleston, South Carolina

9/1/63

Battle - Morris Island, Charleston County, South Carolina

5/6/64

Battle - Port Walthall - Port Walthall Junction, Virginia

6/21/64

Battle - Jerusalem Plank Road - Petersburg, Virginia

7/27/64

Leadership Change - Brigade - Brigadier General Robert Sanford Foster

Brigadier GeneralRobert Sanford Foster

7/27/64

Battle - First Deep Bottom - Henrico County, Virginia

First Deep Bottom
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

8/14/64

Battle - Second Deep Bottom - Henrico County, Virginia

Second Deep Bottom
Second Deep Bottom

As he had done in late July during the Battle of the Crater, Lieut. Gen. Ulysses S. Grant called upon Maj. Gen. Winfield S. Hancock and his Second Corps to attack Gen. Robert E. Lee's forces around Richmond to exploit suspected weaknesses in Lee's lines. In early August, Grant had detached the Sixth Corps from the Union lines around Richmond and Petersburg and sent them to the Shenandoah Valley under Maj. Gen. Phil Sheridan. Sheridan's new army there was to counter Gen. Jubal Early, then operating in the v…READ MORE

9/20/64

Leadership Change - Brigade - Colonel Harris M. Plaisted

9/20/64

Leadership Change - Division - Brigadier General Alfred H. Terry

Brigadier GeneralAlfred H. Terry

9/20/64

Battle - Chaffin's Farm - Henrico County, Virginia

10/7/64

Leadership Change - Division - Major General Alfred H. Terry

Major GeneralAlfred H. Terry

10/7/64

Battle - Darbytown and New Market Roads - Henrico County, Virginia

10/27/64

Battle - Fair Oaks & Darbytown Road - Henrico County, Virginia

Fair Oaks & Darbytown Road
Fair Oaks & Darbytown Road

See also: https://en.wikipedia.org/wiki/Battle_of_Fair_Oaks_%26_Darbytown_RoadREAD MORE

4/2/65

Battle - Third Petersburg - Dinwiddie County, Virginia; Petersburg, Virginia

Third Petersburg
Third Petersburg

With the Confederate defeat at Five Forks on April 1st, Lieut. Gen. Ulysses S. Grant and Maj. Gen. George Meade ordered a general assault against the Petersburg lines by the Second, Ninth, Sixth and Twenty-Fourth Corps to take place April 2nd. In the pre-dawn darkness, the Union infantry gained a successful breakthrough where Maj. Gen. Horatio G. Wright's advancing Sixth Corps met the Confederate lines held by Maj. Gen. A. P. Hill near the Boydton Plank Road. Hill was killed trying to reach his troops in t…READ MORE

4/9/65

Battle - Appomattox Court House - Appomattox Court House, Virginia

Appomattox Court House
Appomattox Court House

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

8/28/65

Mustered Out - New York 100th Infantry - New York

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