Whakaotihia te rerenga e whai ake nei: I mahi a Smith hei koroneela o nga kaihauturu i nga Pakanga Seminole mai i te 1836 ki te 1838, i mua i tana whakauru ki te Pakanga o Mexico-Amerika. I whakahaua e ia te 2nd Brigade i te wehenga o Worth i te Pakanga o Monterrey. I whakawhiwhia ia ki te perehitini perehitini i te marama o Hepetema 1846 ka uru atu ki te ope a Winfield Scott hei rangatira mo te 1st Brigade, 2nd Division. I ārahi ia i tana rārangi i ngā pakanga o
Ko Veracruz, ko Cerro Gordo me Contreras. I whakawhiwhia ia ki te rangatira nui mo nga mahi i Contreras me te whawhai ki nga pakanga mo Mexico City. I mahi ia i runga i te komihana armistice a muri mai ko te kawana hōia o Mexico City. He mema taketake ia o te Karapu Aztec o te tau 1847.