 Nyorai kupfuurira kweiyi ndima - Pana March 2, 1863, McIntosh akasimudzirwa kuva mukuru uye akapiwa kutungamirira battalion yezvombo. Akatungamirira battalion yake paHondo yeChancellorsville, uye paGettysburg, Bristoe Station, uye hondo dzeMine Run. McIntosh akasimudzirwa kuva lieutenant-colonel muna February 1864 uye akatungamirira battalion yake muOverland Campaign, kusanganisira Hondo yeWilderness. Akarwa pamitsetse yekukomba paKukombwa kwePetersburg uye akakuvadzwa zvishoma muhondo yeCrater. Nguva pfupi pashure pacho akakuvadzwa muHondo yeWeldon Railroad. 