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Federal (USV)


Daniel J. O'Brien

(c. 1841 - 1862)

Home State: New York

Branch of Service: Infantry

Unit: 69th New York Infantry

Before Antietam

Age 20, he enlisted at New York City to serve three years, and mustered in as Private, Company B, 69th New York Infantry on 3 October 1861.

On the Campaign

He was mortally wounded by gunshot to the right thigh in action at Antietam on 17 September 1862.

The rest of the War

He had his leg amputated and was sent to US Army General Hospital #5, in Frederick, MD. He had a secondary amputation at the upper third of his right femur performed by Surgeon H. S. Hewit on 5 December, and died of exhaustion there on 16 December 1862.

References & notes

Service information from the Roster.1 Details from McLernon,2 citing the Medical and Surgical History of the War of the Rebellion (1870). His gravesite is on Findagrave.


c. 1841


12/16/1862; Frederick, MD; burial in Saint John's Cemetery, Fredrick, MD


1   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, For the Year 1901, Ser. No. 28, pg. 269  [AotW citation 18050]

2   McLernon, Robert, Casualty List, 69th New York Volunteer Infantry, Meagher's Irish Brigade, Bloody Lane, Antietam, Maryland, September 17, 1862, Springfield (Va): R. McLernon, 2014, pg. 10  [AotW citation 18051]