Nicholas Crotzenberg, Samuel C. Cobb, John Auld and Olney S. Gibbs were promoted or mustered out.

The evidence

• “Ruger, Second Lieutenant, afterward appointed Adjutant on the organization of the regiment; Milton Bowerman, appointed Second Lieutenant, promoted First Lieutenant August 11, 1863, resigned September 30, 1864; Samuel C. Cobb, promoted Second Lieutenant August 11, 1863, First Lieutenant October 18, and Captain November 21, 1864 ; George Hoskins, David H.”

  1879-history-of-rock-county/12-rock-county-ch06-politics-war-record.md, PDF p. 459

  Butterfield, C. W., et al. The History of Rock County, Wisconsin: its early settlement, growth, development, resources, etc. Chicago: Western Historical Company, 1879. Cornell University Library via the Internet Archive, archive.org/details/cu31924028871585.

  Grade A: Found on a page of one of our sources