|Name at Enlist||Johannes Simensen|
|Lived||ca. 1821 -|
|Residence at Muster-In||Coon Prairie, Bad Ax (Vernon) County, WI|
|Company at Enlistment||G|
|Rank at Enlistment||Private|
|Muster Date||9 Dec 1861|
Johannes Simensen joined the WI 15th Infantry, Company G. The men of the company called themselves the "Rock River Rangers."
The army listed him as living in Coon Prairie, Bad Ax (Vernon) County, WI, age 40, and unmarried. He enlisted for three years on November 12, 1861 at Coon Prairie and mustered at Madison, WI on December 9, 1861 as a Private (Menig). He was discharged from the service at Mississippi River Island No. 10 on July 8, 1862 for disability due to disease.
Sources: Series 1200: Records of Civil War Regiments, 1861-1900, Wisconsin Adjutant General’s Office, box 76-9; Regimental muster and descriptive rolls, 1861-1865, Wisconsin Adjutant General’s Office, vol.20, p.104; Det Femtende Regiment, Wisconsin Frivillige [The Fifteenth Regiment, Wisconsin Volunteers], Ole A. Buslett (Decorah, Iowa, 1894), p.543.