Tuhia he tomokanga mo tenei whitianga - I whakawhiwhia te reimana ki te pirihimana a Brigadier General Martin E. Green o Major General John S. Bowen's Division, o Lieutenant General John C. Pemberton's Army of Mississippi mo te Whakatairanga Vicksburg. I te hinganga o te Jenerari Green i te Pipiri 27, 1863, i whakawhiwhia a Colonel Dockery ki te rangatira o te Tuarua o te Brigade, o te Roopu a Bowen, na reira ko te rangatira o te 19th Arkansas Regiment i tukuna ki a Lieutenant-Colonel Dismukes, nana nei i arahi te rerenga i roto i nga pakanga whakamataku i mua i te Siege o Vicksburg. I whawhai te 19 Arkansas i te Pakanga o Port Gibson
Ko te pakanga o Champion's Hill, me te pakanga o Big Black River Bridge, i mate ai a Lieutenant-Colonel Dismukes, i hopukina te nuinga o te ope. I whakatairangahia a Major Horatio Gates Perry Williamson ki te rangatira-koronel i muri i te matenga o Dismukes, a, ko nga toenga o te 19 o Arkansas i hoki ki Vicksburg, i reira i mau ai te whakapae e wha tekau nga ra.