Born in Fairfield, Vt.___Son of Thomas O'Regan,___by occupation a Weaver,___Married,___at the age of 28 enlisted for three years in the 10th. Regiment of Infantry, Mass. Vols.__Comapny F.
Mustered into service on July 21, 1861, at Springfield, Mass.
From Camp Brightwood, he was furloughed 10 days in January, 1862 and visited Chicopee.
He participated in Gen. McClellan's Peninsula Campaign until after the battle of "Fair Oaks". He was then sick, and sent to hospital at Harrison's Landing._Thence to Baltimore, McKinni's Mansion, where he stayedthree months.__Then was transferred to West Building Hospital, where he remained till January 21, 1864, being on duty as Ward Master the last seven months.__He then proceeded to rejoin the regiment at Brandy Station, Va.
From that time he served with the company in all movements and engagements, including Gen. Grant's Campaign before Richmond, until the expiration of his term of service.
Returned with the regiment, arriving in Springfield June 25, 1864, and was mustered out of service on the 6th. of July following.]]>