Ramba uchinyora ndima iyi - Munguva yeHondo yeWhite Oak Swamp muna June 1862, Lewis akarohwa gumbo rokurudyi nechidimbu chepfuti. Gare gare akapinda muhondo dzose dze5th Regiment kunze kweMine Run
uye Antietam kusvika muna Chivabvu 1864, apo ruoko rwake rworuboshwe rwakadimburwa papfudzi semhedzisiro yekukuvara kwaakatambura mukati mezuva rekutanga reHondo yeRenje. Akabva aendeswa kuFredericksburg, ndokuzoendeswa kuBuffalo, uko mudzimai wake akamutarisira paaipora. MunaGunyana 1864, akaburitswa zvine rukudzo, uye akabatana neVeteran Reserve Corps (VRC) semakoronari; munaKurume 1865, akasimudzirwa kuita brigadier general.