<prompt> Pedzisa mutsara unotevera: Pashure pokurongwa, hurumende itsva yakapiwa First Missouri Brigade. First Missouri Brigade, yaitungamirirwa naColonel Francis M. Cockrell, yakaendeswa kunharaunda yeGrand Gulf, Mississippi mukutanga kwaMarch 1863. Pavaiva paGrand Gulf, boka racho rakavaka masvingo. 1st ne4th Missouri Consolidated, pamwe chete ne2nd Missouri Infantry, 3rd Missouri Infantry, uye Henry Guibors artillery battery, vakayambuka Rwizi rweMississippi kuenda kuLouisiana kunoona mafambiro eUnion. Musi waApril 15, vaMissouri vakarayirwa kuti vadzokere kuGrand Gulf, uye hurumende yakabatanidzwa mumoto wezvombo zvehondo nemidziyo yemvura yeUnited States pa  <response>: Hondo yeGrand Gulf. Mushure mokunge Major General Ulysses S. Grant asvika muMississippi kuti aende kundorwisa Vicksburg, Bowen akatuma varume vake vakawanda kubva kuGrand Gulf kuenda kuPort Gibson, Mississippi kuti vaedze kumisa Grant. Zvisinei, 1st ne4th Missouri Yakabatanidzwa yakanga iri pabasa rakasununguka richidzivirira bhiriji, uye rakapotsa Hondo yePort Gibson yakazotevera musi waMay 1. 