Company A, Fortieth Regiment Wisconsin Volunteers, left Janesville for Madison.

The evidence

• “In 1864 on May 17 the last regiment left Janesville for Madison. This was Company A, Fortieth Regiment Wisconsin Volunteers, S.”

  1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 48 / book p. 561

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

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