Tuhia he tomokanga mō tēnei wāhanga - I tīmata ngā pakanga i waenganui i ngā hōia o U.S. me Mexico i te 25 o Paenga-whāwhā 1846 me ngā hōia o Mexico e patu ana, e hopu ana hoki i te maha o ngā hōia o U.S. Army i te āhua o Texas o muri mai. Ko te Pakanga o Palo Alto
, te pakanga nui tuatahi o te Pakanga Mexico-American, i whawhai i te 8 o Mei 1846, i etahi maero mai i te taone nui o Brownsville, Texas. Ko te kaha o te 3,400 nga hoia Mexico (he waahanga o te "Hua o te Raki") i arahina e te rangatira o Mexico a Mariano Arista i whakaeke i te kaha o te 2,400 nga hoia o te United States i raro i te rangatira a Zachary Taylor. I peia e ngā ope a Taylor ngā Mekemeke i te āpure. I whakautu te Kaunihera o te United States ki enei riri ma te whakaputa i te whakapae pakanga ki Mexico i te 13 o Mei 1846 - kua tiimata te Pakanga o Mexico-Amerika.