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Federal (USV)

Sergeant

John A. O'Brien

(c. 1841 - 1862)

Home State: New York

Branch of Service: Infantry

Unit: 42nd New York Infantry

Before Antietam

He was age 20 when he enlisted at Long Island, and mustered in as Private, Company C, 42nd New York -Intantry on 22 June 1861. He transferred to Company H on 28 June 1861, was promoted to Corporal on 1 November 1861, and Sergeant on 19 February 1862.

On the Campaign

He was killed in action at Antietam on 17 September 1862.

References & notes

Basic information from the Antietam Cemetery History1, which lists him as a Private in Company C. Service data from the State of New York2.

Birth

c. 1841

Death

09/17/1862; Sharpsburg, MD; burial in Antietam National Cemetery, Sharpsburg, MD

Notes

1 Antietam National Cemetery, Board of Trustees, History of Antietam National Cemetery, Baltimore: John W. Woods, Steam Printer, 1869 [AotW citation 3989]

2 State of New York, Adjutant-General, Annual Report of the Adjutant General of the State of New York [year]: Registers of the [units], 43 Volumes, Albany: James B. Lyon, State Printer, 1893-1905, Issue 23 (for the year 1900), pg. 1044 [AotW citation 8480]

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