Actually,I didn't want to sacrifice military strength.I just didn't fortify the cities in Yucatan because they were safe from enemies.After all,I wanted to crush the Englishmen.And the Aztecs were my allies.Betraying me is the last thing they would think to do,for their main priority was to keep themselves safe from Tlaxcala.Attacking Spain didn't interest me.My main priority was to send the English back to England.But that Tlaxcala wouldn't hesitate to attack the Spaniards,although they(Spaniards)had superiority in technology,and utilised animals into warfare.Just saying...