Norman fought in the Civil War as as member of Company G, First Regiment Connecticut Volunteers Heavy Artillery. He was mustered in on May 22, 1861, re-enlisted on November 11, 1863, promoted to corporal on May 24, 1864, and wounded at Petersburg, VA on August 5, 1864. He was mustered out on September 25, 1865.

Worcester, MA City Directory for 1876 lists Norman as follows:
"Mague Norman C. machinist, 178 Union, house 26 Salem"
1880 Federal Census - Massachusetts - Worcester County, West Boylston, Vol. 34, E.D. 835, Sheet 37, Line 39.
Mague, Norman C. W M 36 Works in cotton Mill Massachusetts
Lizzetta W F 34 Wife Keeps house Rhode Island
Walter N. W M 9 son Rhode Island
Lilla Belle W F 5 daughter Connecticut
Bessie E. W F 3 daughter Rhode Island
More About NORMAN CAMPBELL MAGUE:
Military service: Bet. 1861 - 1865, Co. G, First Regiment Conn. Volunteers Heavy Artillery (Source: Record of Service of Connecticut Men in the Army and Navy of the United States during the War of the Rebellion, (The Case, Lockwood and Brainard Co., Hartford: 1889), 149.)238