Guud ahaan ciidanka Midowga Maraykanka, Major General Ulysses S. Grant, wuxuu 24,000 oo nin ka soo dejiyay Bruinsburg, Mississippi, April 30, 1863, qayb ka mid ah ololihii Vicksburg, hawlgal loogu talagalay in lagu qabsado magaalada muhiimka ah ee Vicksburg, Mississippi. 1-dii Maajo, raggiisii waxay u dhaqaaqeen dhanka bari ee webiga, ragga Grant waxay ku guuleysteen inay ku guuleystaan dagaalkii Port Gibson
Waxaad Kadib Port Gibson, Grant wuxuu dooran karaa inuu weeraro Vicksburg dhanka koonfureed, ama inuu sii maro dhanka bari ka dibna uu u leexdo dhanka galbeed ee magaalada. Waxa uu go'aansaday in uu doorto jidka labaad, maadaama uu siinayo fursado badan oo uu ku qabsan karo ciidanka Confederate ee difaacaya Vicksburg, marka lagu daro magaalada lafteeda.