Home State: New York
Branch of Service: Infantry
Unit: 63rd New York Infantry
Age 21 at enlistment. Mustered in as sergeant, Company H, on September 19, 1861.
On the Campaign
He was wounded in action - knee - on 17 September 1862.
The rest of the War
Discharged for wounds on March 7, 1863, at Baltimore, Md.
References & notes
Basic information from McLernon1. His name is also borne as John Brennan, and it appears that way in the casualty list.