Here was all the cause the Spaniards required for attack, and as the country was for the most part open, the horsemen would have great advantage over native
troops. Its subjugation, therefore, promised to be easy, and would secure the rear. The Tlascaltecs approved of beginning the campaign with the outlying provinces,25 where the concentration of forces was smaller, and where the memory of Aztec misrule and oppression might readily induce the inhabitants to transfer their allegiance, so as to strengthen the conquerors and allure fresh allies. They were eager to begin the campaign, and offered a large force of warriors. Xicotencatl junior also evinced a promptness to coöperate, as if to remove any ill feeling that might have arisen from his machinations.26 In order to thoroughly enlist their sympathies Cortés made an arrangement with the lords whereby a number of privileges were assured to their people, together with a fixed proportion of the spoils27 to be obtained during the war.
The troops were mustered at Tzompantzinco, near Tlascala, amidst a large concourse of people. There were about four hundred and fifty Spanish soldiers, with nearly twenty horses, a few firelocks and field-pieces, and a number of cross-bows, but the arms were chiefly swords and pikes. The reinforcements consisted of six thousand Tlascaltecs, including a few Cholultecs and Huexotzincas, a larger force being prepared under Xicotencatl to follow later.28 A demand had meanwhile
been sent to Tepeaca to confirm the oath of allegiance once tendered the Spanish sovereign and dismiss the Aztec garrisons, whereupon all past offences would be forgiven. The reply was a contemptuous refusal, with the threat that any attempt at coercion would bring upon the invaders worse punishment than they had received at Mexico, for they all would be dished up at the festive board. Every proposal being rejected, a formal notice was sent condemning the province to be chastised with sword, and fire, and slavery, for rebellion and murder of Spaniards.29