The 66th Illinois Veteran Volunteer Infantry Regiment (Western Sharpshooters)By late December 1863, 470 Sharpshooters had reenlisted, far above the 3/4 percentage required to allow the unit to be awarded the "Veteran" designation: Barker, With the Western Sharpshooters, p 170The Regiment was officially allowed to maintain the WSS name as part of their official Illinois name after a request from Col Burke to Gov Yates: Illinois State Archives, Illinois Adjutant General's Office Civil War Records, Records Group 301.18, Burke letter of Jan 8, 1863 originally known as Birge's Western Sharpshooters and later as the "Western Sharpshooters-14th Missouri Volunteers",During the units Missouri incarnation, state officials allowed the "Western Sharpshooters" name to predominate in the unit title, using the WSS-14th MO arrangement in orders, official correspondence and Commissions: MO State Archives, Records of the Adjt Gen, Records Group 133The Sharpshooters were never officially known by the WSS alone, they were must

The 141st Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War. It was among scores of regiments that were raised in the summer of 1864 as Hundred Days Men, an effort to augment existing manpower for an all-out push to end the war within 100 days.

The 66th Ohio Infantry Regiment was an infantry regiment in the Union Army during the American Civil War. It was noted for its holding the high ground at the center of the line at Antietam as part of Tyndale's 1st Brigade, Greene's 2nd Division of Mansfield's XII Corps.