Company D, Second Regiment (the first company of volunteers enlisted for the war in Rock County) left Janesville for Camp Randall at Madison.

The evidence

• “The first company recruited here left Janesville for Camp Randall at Madison on May 6, 1861. This was Company D, Second Eegiment Wisconsin Volunteers, George B.”

  1908-brown-rock-county/26-history-of-janesville.md, Vol. 2, PDF p. 46 / book p. 559

  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