Faatumu le fuaiupu lenei: I le avea ai ma le 21st Arkansas Regiment, i lalo o le pule a le Kolone o Jordan E. Cravens, na tau ai lenei regiment i taua nei:
O le taua i Grand Gulf, Battle of Port Gibson, Battle of Champion's Hill, Battle of Big Black River Bridge, ma mulimuli ane na tuuina atu i le faaiuga o le Siege of Vicksburg. O le 21st Arkansas na tuufaatasia ma le 15th Northwest Arkansas, 16th Arkansas, ma le Powers' 14th Arkansas Infantry Regiments e fausia ai le 1st Arkansas Consolidated Infantry Regiment (Trans-Mississippi), ma sa i ai i Marshall, Texas, ina ua maeʻa le taua. Na tofia le regiment tuufaatasia faatasi ai ma le 2nd Arkansas Consolidated Infantry Regiment ma le 3rd Arkansas Consolidated Infantry Regiment ma le 2nd (McNair's) Arkansas Brigade, 1st (Churchill's) Arkansas Division, 2nd Corps, Trans-Mississippi Department, mai ia Setema 1864 ia Me 1865.