Listed as a teamster and a resident of Springfield, Massachusetts, the twenty-one year old Arnum enlisted at Littleton and was mustered in as a private into Company E on November 4, 1863. He served with the regiment until it was disbanded on August 20, 1865. He received $325 as a state bounty, and his last known address was North Adams, Massachusetts.1
This full-length study of Arnum shows him in uniform with his hand resting upon the American flag, which is draped over a table in the foreground. Behind him is a painted backdrop representing a seashore military camp.
1. Luis F. Emilio. History of the Fifty-fourth Regiment of Massachusetts Volunteer Infantry, 1863-1865. 2d ed. Boston, 1894, p. 359; Massachusetts Soldiers, Sailors, and Marines in the Civil War. 8 vols. Norwood, Mass. 1931-1934; Brookline, Mass., 1935, 4:680.