 Nyorai kupfuurira kweiyi ndima - 39th yakapiwa basa rokurinda njanji yeBaltimore neOhio. Musi waNdira 2, 1862, kambani yakasangana naMajor General Stonewall Jacksons Valley District Army varwi zviuru gumi nezvishanu, asi vakakwanisa kudzokera shure mushure mekurwisana. Kuita chisarudzo kwaMann panguva yokurega basa kwakamuita kuti akwidziridzwe kuva lieutenant colonel. Akashanda muvashandi veGeneral Alpheus S. Williams kusvikira aenda kunobatana nechikwata chake muHondo yekutanga yeKernstown. Chikwata ichi chakazoenda kuSouth Carolina uye 39th yakatora chikamu muKukombwa kweFort Wagner; Mann akatumira chiziviso chekutorwa kwayo kuna General Quincy Adams Gillmore. 