Battle of Otumba

The result of the battle was a victory for the Spanish, which allowed Cortés to reorganize his army, having suffered casualties a few days before in the episode known as La Noche Triste.

A year later, by reinforcing his army with new men and supplies, and creating alliances with the indigenous peoples who had been subjugated by the Aztec, Cortés managed to besiege and conquer Tenochtitlan.

[4] Cortés had been commissioned by Governor Diego Velázquez de Cuéllar of Spanish-controlled Cuba to lead an expedition in the area,[5] which was dominated by the Aztec Empire.

After securing a quick and brilliant victory, Cortés joined Narvaez' forces to his own, and marched back to Tenochtitlán, as he had heard word that the city was up in arms against the remaining Spaniards.

[10] During this attempt at salvation, however, Cortés' forces and entourage (consisting of civilian women and men of both Spanish and Indian extraction) were severely cut down.

[10] After being beleaguered on the causeway leading out of the city, the surviving Spanish forces arrived at the plain of Otumba, where they encountered a vast Aztec army.

With this victory, the Spanish conquistadors were able to reach the safe haven of Tlaxcala, regroup, and gather their strength for an eventual counter-attack deep into the Aztec territory, which would result in the Fall of Tenochtitlan and the foundation of New Spain.