|Name at Enlist||Abraham Halvorson|
|Lived||ca. 1844 -|
|Residence at Muster-In||Decorah, Winneshiek County, IA|
|Company at Enlistment||H|
|Rank at Enlistment||Private|
|Muster Date||13 Feb 1862|
Abraham Halvorson joined the WI 15th Infantry, Company H. The men of the company called themselves "Heg's Rifles" in honor of the 15th commander, Colonel Hans C. Heg. They were also known as the "Voss Company" because of a large number of them who were from the Voss region of Norway. He was listed as living in Decorah, Winneshiek County, IA. He was 18 years of age and unmarried. Halvorson enlisted for three years on December 30, 1861 at Decorah, and mustered at Madison, WI on February 13, 1862 as a Private (Menig). He was discharged from the service for disease at Jacinto, MS on August 6, 1862.
Sources: Series 1200: Records of Civil War Regiments, 1861-1900, Wisconsin Adjutant General’s Office, box 76-10; Regimental Muster and Descriptive Rolls, 1861-1865, Wisconsin Adjutant General’s Office, vol.20, p.116; Det Femtende Regiment. Wisconsin Frivillige [The Fifteenth Regiment, Wisconsin Volunteers], Ole A. Buslett, Decorah, IA, 1894, p.561; Oberst Heg og hans gutter, Waldemar Ager, 1916, Fremad Pub. Co., Eau Claire, WI, p.309.