Ia tusia se faaauauga o lenei palakalafa - I le aso 3 o Mati, 1847, na tofia ai Cadwalader e avea ma fitafita sili ma na ia pule i se vaega o fitafita na auina atu e faamalosia Winfield Scott i le ogatotonu o Mekisikō. Na faaigoaina lana vaega o le 2nd Brigade i le vaega fou o le 3rd Division i lalo o le taitaiga a Gideon Pillow. Na auai o ia i taua i Contreras, Churubusco
, ma Chapultepec. Ona o ana auaunaga i Chapultepec, na faauuina ai o ia o le Major General i le Regular Army, e amata mai ia Setema 13, 1847.