 Nyorai mberi kweiyi ndima - Munguva yeHondo yeMexico neAmerica, Trousdale akabatana neHondo aine chinzvimbo chaColonel, uye akatungamira 14th U.S. Infantry. Iri boka rakasvika kuVeracruz musi wa13 Chikumi 1847, ndokuiswa pasi peGeneral Gideon Pillows 3rd Division. Mauto aTrousdale akabatana nemauto aWinfield Scott musi wa8 Chikunguru, ndokutanga kufamba nechomukati kuenda kuMexico City. Trousdale akatora rutivi muHondo yeContrerasuye Hondo yeChurubusco musi waAugust 20, uye akakuvadzwa papfudzi paairwisana muHondo yeMolino del Rey musi waSeptember 8. Trousdale akarayira mapoka maviri 14th uye 11th uye artillery battery paHondo yeChapultepec musi waSeptember 13. Munguva yehondo iyi, ruoko rwake rworudyi rwakapwanywa nemoto wemuvengi, kunyangwe akaramba achirwa, uye akakwanisa kutungamira mhosva iyo yakabata pfuti yemuvengi. Nokuda kwezviito zvake paChapultepec, Trousdale akasimudzirwa kuva brigadier general naPurezidhendi James K. Polk musi waAugust 23, 1848. 