As the 21st Arkansas Regiment, under Col. Jordan E. Cravens, this regiment fought in the following engagements: Second Battle of Corinth, Battle of Grand Gulf, Battle of Port Gibson, Battle of Champion's Hill, Battle of Big Black River Bridge, and finally was surrendered with at the end of the Siege of Vicksburg. The 21st Arkansas was consolidated with the 15th Northwest Arkansas, 16th Arkansas, and Powers' 14th Arkansas Infantry Regiments to form the 1st Arkansas Consolidated Infantry Regiment (Trans-Mississippi), and was stationed at Marshall, Texas, when the war ended. The consolidated regiment was assigned along with the 2nd Arkansas Consolidated Infantry Regiment and the 3rd Arkansas Consolidated Infantry Regiment and to the 2nd (McNair's) Arkansas Brigade, 1st (Churchill's) Arkansas Division, 2nd Corps, Trans-Mississippi Department, from September 1864 to May 1865.