23d Wisconsin Infantry
The 1st Brigade, in support of Brig. Gen. William P. Benton's 1st Brigade of Brig. Gen. Eugene A. Carr's 14th Division, Maj. Gen. John A. McClernand's XIII Army Corps, attacked the north face of the 2d Texas Lunette on Baldwin's Ferry Road on 22 May 1863, placing its colors close to that work and held its position until relieved by Col. John B. Sanborn's 1st Brigade of Brig. Gen. Isaac F. Quinby's 7th Division, Maj. Gen. James B. McPherson's XVII Army Corps.
Port Gibson, 1 May 1863 - 1 enlisted man WIA.
Champion Hill, 16 May 1863 - 3 enlisted men WIA.
Big Black River, 17 May 1863 - 1 enlisted man WIA.
Vicksburg Assaults, 22 May 1863 - 2 enlisted men KIA, 3 officers and 25 enlisted men WIA, 2 enlisted men captured or missing.