Faatumu le fuaiupu lenei: Na tofia le regiment i le Brigadier General Martin E. Green's brigade o le Major General John S. Bowen's Division, o le Lieutenant General John C. Pemberton's Army of Mississippi mo le Vicksburg Campaign. Ina ua fasiotia le General Green i le aso 27 o Iuni, 1863, na tofia ai le Kolonela Dockery e pule i le Second Brigade, Bowen's Division, ma o lea na avea ai le pule o le 19th Arkansas Regiment ma Lieutenant-Colonel Dismukes, o le na taitaia le regiment i taua mataʻutia na muamua atu i le Siege of Vicksburg. O le 19th Arkansas na tau i
O le Taua i Port Gibson, o le Taua i Champion's Hill, ma le Taua i Big Black River Bridge, lea na manuʻa ai le Lieutenant-Colonel Dismukes ma na puʻea faapagota ai le toʻatele o le regiment. Na siitia Horatio Gates Perry Williamson i le tulaga o le lutena-kolone ina ua maliu Dismukes, ma o le vaega na totoe o le 19th Arkansas na toe foi i Vicksburg, lea na tumau ai i le falepuipui mo le fasefulu aso.