Kammala wannan jumla: A lokacin yakin White Oak Swamp a watan Yunin 1862, Lewis ya sami rauni a ƙafar dama ta wani ɓangaren harsashi. Daga baya ya halarci dukkan yaƙe-yaƙe na 5th Regiment ban da
Mine Run da Antietam har zuwa Mayu 1864, lokacin da aka yanke hannunsa na hagu a kafada sakamakon raunin da ya samu a ranar farko ta yakin daji. Daga nan aka kai shi Fredericksburg, sannan Buffalo, inda matarsa ta kula da shi yayin da yake murmurewa. A watan Satumbar 1864, an sallame shi da girmamawa, kuma ya shiga Rundunar Sojojin Tsoffin Sojoji (VRC) a matsayin colonel; a watan Maris na 1865, an daukaka shi zuwa brigadier general.