Tlacochcalcatl

Together with the tlacateccatl (general), he was in charge of the Aztec army and undertook all military decisions and planning once the tlatoani had decided to undertake a campaign.

Tlacochcalco ("in the house of darts"[1]) was the name of four armories placed at the four entries to the ceremonial precinct of the Aztec capital Tenochtitlan.

These mains armories were stocked with new weapons every year (during the festival of Quecholli), and one account by the Spanish conquistador Andrés de Tapia estimates the number of weapons found in each of the four armories to be "500 cartloads".

When Itzcoatl became tlatoani he appointed Tlacaelel as tlacochcalcatl and Moctezuma Ilhuicamina as tlacateccatl; when Tlacaelel was appointed cihuacoatl, Moctezuma Ilhuicamina was promoted to tlacochcalcatl.

It is not known who was tlacochcalcatl under the rule of Moctezuma I; possibly Tlacaelel held a dual office in this period.