Mezue ahịrịokwu na-esonụ: Mgbe a haziri ya, e kenyere ndị agha ọhụrụ ahụ na First Missouri Brigade. E zigara ndị otu First Missouri Brigade, nke Colonel Francis M. Cockrell duziri, na nso Grand Gulf, Mississippi na mbido Machị 1863. Ka ha nọ na Grand Gulf, ndị agha ahụ wuru ebe ndị e wusiri ike. 1st na 4th Missouri (Consolidated), tinyere 2nd Missouri Infantry, 3rd Missouri Infantry, na Henry Guibor's artillery batrị, gafere Osimiri Mississippi na Louisiana iji lelee mmegharị Union. N'ụbọchị iri na ise nke ọnwa Eprel, e nyere ndị Missouri iwu ka ha laghachi na Grand Gulf, na ndị agha ahụ sonyere n'ọgba egbe na ụgbọ mmiri ndị agha nke Union na
Agha Grand Gulf. Mgbe Onyeisi ndị agha nke Union bụ Ulysses S. Grant rutere na Mississippi iji gaa megide Vicksburg, Bowen zigara ọtụtụ n'ime ndị ikom ya site na Grand Gulf gaa Port Gibson, Mississippi iji gbalịa ịkwụsị Grant. Otú ọ dị, 1st na 4th Missouri (Consolidated) nọ na ọrụ na-eche nche n'otu àkwà mmiri, ma hapụ agha nke Port Gibson na May 1.