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J.D. O'Brian

J.D. O'Brian

Federal (USA)


John D. O'Brian

Home State: New York

Command Billet: Commanding Regiment

Branch of Service: Infantry

Unit: 24th New York Infantry

On the Campaign

In command of the 24th New York Infantry, part of the 1st Brigade of the 1st Division, I Corps. The Regiment was in the lead of the Division during the assault on South Mountain on September 14. Captain O'Brian was specifically commended by General Hatch for his conduct on the field.

He was wounded in action at Antietam. The Brigade advanced through the Cornfield early on the 17th in close support of BGen Gibbon's 4th 'Black Hat' Brigade.

The rest of the War

He had a leg amputated from his Antietam wound.

References & notes

Wound information from State of New York1. Photograph here from one at the NY State Military Museum.


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  [AotW citation 6219]