The regiment played a prominent part in numerous key battles in both the Eastern and Western theaters of the war.

It was noted for its holding the high ground at the center of the line at Antietam as part of Stainrook's 2nd Brigade, Greene's 2nd Division of Mansfield's XII Corps.

[1] It was further highly regarded for its actions at the Battle of Gettysburg, the Battle of Lookout Mountain, and the Atlanta Campaign.

The 102nd New York Infantry was organized at New York City beginning November 1, 1861 and mustered in for a three-year enlistment March 5, 1862 under the command of Colonel Thomas B.

The regiment was attached to: The 102nd New York Infantry mustered out of service on July 21, 1865.

Defense of Harpers Ferry against Jackson's attack May 28–30.

Pope's Campaign in northern Virginia August 16-September 2.

Regiment detached in New York on special duty March 10-April 4.

Pursuit of Lee to Manassas Gap, Va., July 5–24.

Battle of Ringgold Gap, Taylor's Ridge, November 27.

Battles about Dallas, New Hope Church, and Allatoona Hills May 26-June 5.

Operations about Marietta and against Kennesaw Mountain June 10-July 2.

Ruff's Station, Smyrna Camp Ground, July 4.

Operations at Chattahoochie River Bridge August 26-September 2.

Expedition from Atlanta to Tuckum's Cross Roads October 26–29.