ɪn wˈɜːld wˈɔːɹ aɪ ˌʌndɚ ðɪ ˈɑːɹmiz nˈuː fˌɛdɚɹəlᵻzˈeɪʃən sˈɪstəm, ðeɪ wɜː dˈɛzɪɡnˌeɪɾᵻd ðə wˈʌnhˈʌndɹɪd fˈɪfti fˈɪfθ ˈɪnfəntɹi ɹˈɛdʒɪmənt ænd sˈɜːvd wɪððə θˈɜːɾi nˈaɪnθ dᵻvˈɪʒən.
In World War I under the Army's new federalization system, they were designated the 155th Infantry Regiment and served with the 39th Division.