bˈʌtlɚ ɹᵻsˈiːvd ðə ɹˈæŋk ʌv luːtˈɛnənt kˈɜːnəl, ænd sˈɜːvd ʌntˈɪl wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti fˈoːɹ, wˌɛn hiː ɹɪzˈaɪnd fɔːɹ hˈɛlθ ɹˈiːzənz.
Butler received the rank of lieutenant colonel, and served until 1864, when he resigned for health reasons.