Home State: New York
Branch of Service: Infantry
Unit: 63rd New York Infantry
Age 33 at enrollment, he mustered in as captain, Company K, on September 17, 1861. Discharged on March 10, 1862. Mustered in as captain, same company, on March 19, 1862. Discharged on July 16, 1862. Commissioned captain on December 26, 1861, with rank from September 25, 1861, original. Recommissioned captain on March 25, 1862, with rank from same date, vice himself, resigned.
On the Campaign
He was wounded in action on 17 September 1862.
References & notes
Basic information from McLernon1, with quote below from Conyngham2. "Captain Brannigan, a native of Mayo, organized Company K, and was mustered in as captain. Wounded at Antietam, after which he resigned." Is the statement that he was wounded in action at Antietam a mistake by Conyngham, or is the roster [which does not mention it] in error?
1 McLernon, Robert, Casualty List, 63rd New York Volunteer Infantry, Meagher's Irish Brigade, Antietam, Maryland; September 17, 1862, Springfield (Va): R. McLernon, 2001 [AotW citation 2483]
2 Conyngham, David Power, The Irish Brigade and Its Campaigns, New York: William McSorley & Co., 1867, pg. 573 [AotW citation 2486]