George F. Saunders was promoted to First Lieutenant.

The evidence

• “George F. Saunders (promoted to First Lieutenant April 30, 1862, and resigned), William A. Jameson (promoted January 9 and May 4, 1863, to First Lieutenant) and Henry Silman, Sergeants;”

  1879-history-of-rock-county/12-rock-county-ch06-politics-war-record.md, PDF p. 455 / book 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

  

• “George F. Saunders (promoted to first lieutenant April 30, 1862, and resigned), William A. Jameson (promoted January 9 and May 4, 1863, to first lieutenant) and Henry Silman, sergeants ;”

  1908-brown-rock-county/16-military-history.md, Vol. 1, PDF p. 360 / book p. 331

  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 · may repeat 1879-history-of-rock-county, so not counted as independent