The 77th New York Infantry was organized at Saratoga Springs, New York, November 22, 1861, and mustered on November 23, 1861, for three years' service under the command of Colonel James B. McKean.

The regiment was attached to 3rd Brigade, Casey's Division, Army of the Potomac, to March 1862.

3rd Brigade, 2nd Division, IV Corps, Army of the Potomac, to May 1862.

White Oak Swamp and Glendale June 30.

Movement to Fort Monroe, then to Centreville, August 16–28.

Assist in checking Pope's rout at Bull Run August 30, and cover retreat to Fairfax Court House September 1.

Crampton's Pass, South Mountain, September 14.

Assault on the Salient or "Bloody Angle" May 12.

Jerusalem Plank Road, Weldon Railroad, June 22–23.

Repulse of Early's attack on Fort Stevens and the northern defenses of Washington July 11–12.

Sheridan's Shenandoah Valley Campaign August 7-November 28.

Gilbert's Ford, Opequan Creek, September 13.

The regiment lost a total of 273 men during service; 9 officers and 87 enlisted men killed or mortally wounded, 2 officers and 175 enlisted men died of disease.

The 77th New York Volunteer Infantry are honored by three statues of note.

[1] The second statue is located in Congress Park in Saratoga Springs, New York.

Following the murder of George Floyd, the statue was vandalized by persons unknown.

The third statue is located in Ballston Spa, New York.