<prompt> Bhala ukuqhubeka kwalesi sigaba - Phakathi neMpi yaseMexico naseMelika, walwa eMpini yaseContreras naseMpini yaseChurubusco  <response>: , kokubili ngo-August 1847. Ngesikhathi esalwa eChurubusco walimala futhi, futhi ukusebenza kwakhe lapho kuhlangene nezenzo zakhe eContreras kwamenza wakwazi ukuthola isikhundla sokuba ngumphathi omkhulu ngo-Agasti 20. UWalker wabe esehlanganyela eMpini yaseMolino del Rey ekuqaleni kukaSepthemba futhi walimala futhi, kulokhu emhlane. Ngenxa yezenzo zakhe lapho, wakhushulelwa esikhundleni sokuba u-lieutenant colonel ngo-September 8. 