Ka dib dagaalkii Arkansas Post, Grant wuxuu dib u helay amarkii Sherman ee ciidanka, dib u habeynta XV Corps, iyo sidoo kale McClernand, oo sii waday amarkii XIII Corps. Kornayl Rutherford iyo Guutada 97aad ee Ciidamada Lugta ee Illinois, waxay wali la joogeen guutada Kornayl Landram, oo hadda ah Guutada 2aad ee Qaybta 10aad ee Brigadier General Andrew Jackson Smith. Guutada 97aad ee Ciidamada Caga-jirka ee Illinois ayaa ka qeyb qaadatay Dagaalkii Port Gibson
1-dii Maajo, sanadkii 1863. Ka dib markii ay qaateen qaar ka mid ah jahawareerka iyada oo aan wax iska caabin ah, ciidanka Midowga waxaa hoos u dhigay weerarkii Confederate. Waxaa xoojiyay qeybta Brigadier General John A. Logan ee Major General James B. McPherson, qeybta Ciidanka Midowga ee Brigadier General Peter Osterhaus ee McClernand's corps ayaa weerartay dhanka midig ee Confederate waxayna ka dhigtay booska uu qabtay Brigadier General Martin Green. Taliyihii ciidamada gumaysiga Gaashaanle sare John Bowen ayaa ciidamadiisii ka soo saaray Port Gibson habeenkaas.