<prompt> Pedzisa mutsara unotevera: Muna August 1847, Van Buren akasimudzirwa kuva lieutenant colonel nechibvumirano chokuziva mufambiro wake wokushinga uye wakafanira mukati mehondo dzeContreras uye  <response>: Churubusco. Van Buren aiva nhengo yokutanga yeAztec Club ya1847. 