10th New York Cavalry Regiment

The 10th New York Cavalry Regiment ("Porter Guard") was a cavalry regiment that served in the Union Army during the American Civil War.

The 10th New York Cavalry was organized in Elmira, New York beginning in August 1861 and mustered in September 27, 1861, under the command of Major Mathew Henry Avery.

The regiment was attached to Bayard's Cavalry Brigade, Army of Virginia, August–September 1862.

Bayard's Brigade, Cavalry Division, Army of the Potomac, to January 1863.

1st Brigade, 3rd Division, Cavalry Corps, Army of the Potomac, to June 1863.

2nd Brigade, 2nd Division, Cavalry Corps, June 1863.

3rd Brigade, 2nd Division, Cavalry Corps, to August 1863.

1st Brigade, 2nd Division, Cavalry Corps, to June 1865.

Moved to Gettysburg, Pennsylvania, December 24, and duty there until March 1862.

Duty at Havre de Grace and Baltimore, Maryland, Middle Department and in the defenses of Washington, D.C., until August 1862.

Reconnaissance to Dranesville, Herndon Station, and Frying Pan August 31.

United States Ford November 16 (Company H).

Louisa Court House May 2, South Anna Bridge May 3.

Brandy Station and Beverly Ford June 9.

Warrenton or White Sulphur Springs October 12–13.

Ground Squirrel Church and Yellow Tavern May 11.

Kings and Queens Court House June 18.

White House or St. Peter's Church and Black Creek or Tunstall Station June 21.

Prince George Court House July 10 and 16.

Dinwiddie Road, near Ream's Station, August 23.

Poplar Springs Church, Peeble's Farm, September 29-October 2.

Boydton Plank Road, Hatcher's Run, October 27–28.

Near Prince George Court House November 2.

Dabney's Mills, Hatcher's Run, February 5–7, 1865.

Payne's Cross Roads and Amelia Springs April 5.

Deatonville Road and Sailor's Creek April 6.