ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi wˈʌn, tˈɪndɔːl mˈoʊbɪlˌaɪzd ðə fˈɪfti,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ tɹˈuːps ʌvðə θˈɜːɾi ˈeɪtθ dᵻvˈɪʒən æt kˈæmp ʃˈɛlbi, bˌʌt wʌz fˈoːɹst tə ɹᵻtˈaɪɚɹ ɪn mˈeɪ æz hiː ɹˈiːtʃt ðə mˈændətˌoːɹi ɹᵻtˈaɪɚmənt ˈeɪdʒ ʌv sˈɪkstifˈoːɹ.
In 1941, Tyndall mobilized the 50,000 troops of the 38th Division at Camp Shelby, but was forced to retire in May as he reached the mandatory retirement age of sixty-four.