 Ramba uchiverenga ndima iyi - Pakatanga Hondo Yenyika Yose, Lee akabatana neUnion Army. Lee akava mukuru mu7th Kansas Cavalry, muna October 1861. Akakwidziridzwa kuva colonel we regiment uye akabatanidzwa mukutora kwaHenry W. Halleck kweKorinde, Mississippi. Nguva pfupi pashure pokunge guta iroro raparadzwa, Lee akatungamirira 2nd Brigade muCavalry Division yeArmy of the Mississippi uye akapinda muhondo yeCorinth. Musi waNovember 29, 1862, akagamuchira kukwidziridzwa kuva brigadier general muVolunteer Army. Akaenderera mberi achitungamirira mabhirigedhi emauto muuto reTennessee asati agadzwa Chief-of-Staff kuXIII Corps pasi paMaj. Gen. John A. McClernand. Lee akashanda semukuru wemauto munguva zhinji yekurwisa kweVicksburg, achishanda muhondo dzePort Gibson, Champion Hilluye Big Black River. Mukurwisana paRwizi Rutsvuku Rukuru, Peter J. Osterhaus akakuvadzwa uye Lee akasarudzwa kuti atore nzvimbo yake mukutungamira kwe9th Division, XIII Corps. Mutungamiri wokutanga waLee wechiuto akanga ari weupenyu hupfupi sezvo Osterhaus akakwanisa kudzorera mutungamiri zuva rakatevera. Zvisinei, mutungamiri we9th Divisions 1st Brigade, Theophilus T. Garrard, akaenda pazororo rekurwara zuva rimwe chetero uye Lee akatora mutungamiri weboka rake panguva chaiyo kuti aritungamirire mukuita mukati meMay 19 kurwisa kuVicksburg. Mukati mokurwiswa kwacho Lee akakuvadzwa mumusoro uye akapiwa basa rokutungamirira brigade. Akagara kunze kwekusara kwekukomba achipora kubva kumaronda kusvikira pakupera kwezhizha paakadzokera kunzvimbo yekuraira mu XIII Corps. Muna August 1864 akaiswa mukutungamira kweCavalry Division yeDhipatimendi reGulf. Akatungamirira mauto ehondo munguva yeNathaniel P. Banks Red River Campaign. Mumwedzi wokupedzisira wehondo, akatungamirira kurwisa Clinton pedyo neBaton Rouge, Louisiana, uye akakunda simba reConfederate ikoko. 