23rd Regiment
New York State Militia
New York National Guard
Civil War

History
The following is taken from New York in the War of the Rebellion, 3rd ed. Frederick Phisterer. Albany: J. B. Lyon Company, 1912.

Mustered in June 16, 1863
Mustered out: July 22, 1863.

The organization of this regiment, located in Brooklyn and still in existence, dates from the 20th of January, 1862, when its first company (A) was mustered into the State service; the regimental organization was perfected July 14, 1862.

The regiment has received authority to place silver rings on the lances of its colors, engraved as follows:
On the National Color.— Gettysburg Campaign, 1863.
On the Stale Color.— Draft riot, July and August, 1863; East New York, September 22, 1863; Brooklyn, November 6, 1864; Brooklyn, February 16, 1870; Orange riots, 1871; Hornellsville, July 22, 1877; Buffalo, August, 1892; Brooklyn, January, 1895; Albany, 1901.

Service in the War of the Rebellion.

This regiment (ten companies) left the State June 18, 1863, commanded by Col. William Everdell, Jr. It was mustered in the United States service for thirty days at Harrisburg, where, and in the vicinity of which, it served in the 3d Brigade, 1st Division, Department Susquehanna. It was mustered out at Brooklyn, July 22, 1863.

It participated in the following engagements: June 28th, at Oyster Point, Pa.; July 1, 1863, at Carlisle, Pa.

See here for a brief history of the State Militia / National Guard

Further Reading
This is meant to be a comprehensive list. If, however, you know of a resource that is not listed below, please send an email to int-historians@ng.army.mil with the name of the resource and where it is located. This can include photographs, letters, articles and other non-book materials. Also, if you have any materials in your possession that you would like to donate, the museum is always looking for items specific to New York's military heritage. Thank you.

Lockwood, John. Our campaign around Gettysburg : being a memorial of what was endured, suffered, and accomplished by the Twenty-third regiment (N.Y.S.N.G.) and other regiments associated with them, in their Pennsylvania and Maryland campaign, during the rebel invasion of the loyal states in June-July, 1863. Brooklyn : A.H. Rome, 1864.

Items in the museum collection are in bold.

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