The Thirteenth regiment left the Mississippi river for Texas.

The evidence

• “Henry. On the 7th of July, 1864, the Thirteenth regiment, now a part of the Third Brigade, of the Third Division of the Fourth Army Corps, left the Mississippi river for Texas, going afterward to camp at Green Lake on the 16th of July. Here on the 11th of September, 1865, Colonel Lyon was mustered out of the service.”

  1908-brown-rock-county/32-courts-and-legal-profession.md, Vol. 2, PDF p. 223 / book p. 726

  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