Mezue nkebi ahịrịokwu a: Ọchịagha Ulysses S. Grant nke Ndị Agha Union du ndị agha 24,000 rute Bruinsburg, Mississippi, n'April 30, 1863, dị ka akụkụ nke mkpọsa Vicksburg, bụ́ ọrụ e zubere iji weghara obodo dị mkpa dị n'Osimiri Mississippi bụ́ Vicksburg, Mississippi. N'ụbọchị mbụ nke ọnwa Mee, mgbe ndị ya gbagara n'ọwụwa anyanwụ site n'osimiri ahụ, ndị Grant meriri ndị Confederates na
Agha Port Gibson. Mgbe Port Gibson gasịrị, Grant nwere ike ịhọrọ ịwakpo Vicksburg site na ndịda, ma ọ bụ ịga n'ihu n'ọwụwa anyanwụ wee tụgharịa wee gaa ọdịda anyanwụ megide obodo ahụ. O kpebiri na nke abụọ, ebe ọ nyere ohere ka ukwuu nke ijide ndị agha Confederate na-agbachitere Vicksburg, na mgbakwunye na obodo ahụ n'onwe ya.