|Name at Enlist||Oliver Halvorson|
|Lived||ca. 1844 - 6 Sep 1862|
|Residence at Muster-In||Madison, Dane County, WI|
|Company at Enlistment||A|
|Rank at Enlistment||Private|
|Muster Date||15 Nov 1861|
|Cause of Death||disease|
|Death Location||Corinth, Alcorn County, MS|
|Burial Location||National Cemetery at Corinth; section A, grave 128|
Oliver Halvorson joined WI 15th Infantry, Company A. The men of the company called themselves the "St. Olaf's Rifles." They were also known as the "Sailor Company" because of the large number of seamen in its ranks, and as the "Chicago Company" because so many of its members were residents of that city.
The army listed Halvorson as living in Madison, Dane County, WI, age 17, and unmarried. He enlisted for three years on October 30, 1861 at Madison, and mustered there on November 15, 1861 as a Private (Menig). He was absent sick in general hospital since July 22, 1862, and sick in hospital in Farmington, MS since July 28, 1862. He died of disease in hospital in Corinth, MS on September 6, 1862. He was buried in National Cemetery at Corinth; section A, grave 128.
Sources: Series 1200: Records of Civil War Regiments, 1861-1900, Wisconsin Adjutant General’s Office, boxes 76-3, 77-8; Regimental Muster and Descriptive Rolls, 1861-1865, Wisconsin Adjutant General’s Office, vol.20, p.16, Regimental Muster and Descriptive Rolls, 1861-1865, compiled circa 1885, Wisconsin Adjutant General’s Office, vol.20, p.14; Det Femtende Regiment. Wisconsin Frivillige [The Fifteenth Regiment, Wisconsin Volunteers], Ole A. Buslett, Decorah, IA, 1894, p 352; Nordmændene i Amerika, Martin Ulvestad, 1907, History Book Co., Minneapolis, MN, p.287; Oberst Heg og hans gutter, Waldemar Ager, 1916, Fremad Pub. Co., Eau Claire, WI, p.292.