This combination unit is referred to as the M19 tank transporter, consisting of the M20 tractor and M9 24-wheel trailer.
ðɪs kˌɑːmbᵻnˈeɪʃən jˈuːnɪt ɪz ɹᵻfˈɜːd tʊ æz ðɪ ˈɛm nˈaɪntiːn tˈæŋk tɹænspˈoːɹɾɚ, kənsˈɪstɪŋ ʌvðɪ ˈɛm twˈɛnti tɹˈæktɚ ænd ˈɛm nˈaɪn twˈɛnti fˈoːɹwˈiːl tɹˈeɪlɚ.