Kammala wannan jumla: A farkon 1863, an canja 6th Missouri zuwa Grand Gulf, Mississippi, inda rundunar ta taimaka wajen gina gine-gine. Rundunar ta kasance a wurin.
Yaƙin Grand Gulf a ranar 29 ga Afrilu. Tare da wasu mutane da yawa na Brigade na Missouri na farko, an tura Missouri na 6 zuwa Port Gibson, Mississippi a ranar 1 ga Mayu don magance saukowar Union. A yakin Port Gibson, wanda ya faru a ranar 1 ga Mayu, an yi amfani da 6th Missouri don tallafawa gefen dama na layin Confederate. Lokacin da dakarun Union suka yi barazanar yanke hanyar da ke da rikici, 6th Missouri ya kai hari. Wannan cajin ya shiga zurfin cikin layin Union, amma an tilasta masa ya janye wasu nesa lokacin da ya sadu da ƙarfafawar Union. An ware Missouri na 6 daga sauran sojojin Tarayyar, ya fara guduwa daga bindigogi, kuma an tilasta masa yin yakin basasa don sake shiga cikin babban rundunar sojojin da suka koma baya.