Kammala jumla mai zuwa: An tsara sojojin Scott zuwa rukuni huɗu, tare da batirin Duncan a cikin rukunin 1 na Worth. Yayin da sojojin Amurka suka kusanci Mexico City daga gabas, Scott ya umarci Worth ya gano hanyar da za ta jagoranci Amurkawa don kai hari daga kudu. Worth ya ba da aikin ga Duncan wanda ya ba da rahoton hanyar, "ba a sauƙaƙe ba ko karewa". Ba da daɗewa ba sojojin Scott duka suka bi wannan hanyar. A cikin
Yaƙin Churubusco a ranar 20 ga Agusta, 1847, brigade na Newman S. Clarke, brigade na George Cadwalader, da batirin Duncan sun kama "tête de pont", wani karfi da aka kare ta hanyar karfi. Daga nan suka taimaka wajen kama San Mateo Convent.