Whakaotihia te rerenga e whai ake nei: I muri i te whakahaere, i tohaina te ope hou ki te First Missouri Brigade. Ko te First Missouri Brigade, i whakahaua e Colonel Francis M. Cockrell, i whakawhitihia ki te taha o Grand Gulf, Mississippi i te timatanga o Maehe 1863. I a ia i Grand Gulf, i hangaia e te piritihana nga whakapae. Ko te 1st me te 4th Missouri (Consolidated), me te 2nd Missouri Infantry, 3rd Missouri Infantry, me te paparanga pu a Henry Guibor, i whiti i te awa o Mississippi ki Louisiana ki te tirotiro i nga nekehanga a te Uniana. I te Paenga-whāwhā 15, i whakahaua nga Missourians kia hoki ki Grand Gulf, a ka uru te ope ki te pupuhi pupuhi me nga kaipuke moana o te Uniana i te
Te Pakanga o te Moana Nui. Whai muri i te taenga mai o te Union Major General Ulysses S. Grant ki Mississippi ki te whakaeke i a Vicksburg, i tukuna e Bowen etahi o ana tangata mai i Grand Gulf ki Port Gibson, Mississippi ki te tarai ki te aukati i a Grant. Heoi, ko te 1st me te 4th Missouri (Consolidated) i runga i te mahi motuhake e tiaki ana i te piriti, a ka ngaro i te Pakanga o Port Gibson i te 1 o Mei.