After eight months they were back , this time with an even larger contingent of native allies .
After a major battle in 1519 , during which the Spanish forces were defeated and sent into retreat , the Spaniards regrouped outside the Valley of Mexico .
After eight months Spaniards were back , this time with an even larger contingent of native allies .
After a major battle in 1519 , during which the Spanish forces were defeated and sent into retreat , the Spaniards regrouped outside the Valley of Mexico .