Rather than kill their opponents, the Aztecs preferred to capture them alive. Hence, strategy played a crucial role in conflict; using superior numbers to outflank and surround the enemy. To do so, they erected a command post on a hill, overlooking the enemy, with runners positioned every four kilometres, to carry messages by relay. For rapid long-distance communication, they used smoke signals, or heliograph mirror signals.
Battle opened with an exchange of insults, mocking comedy sketches and obscene gestures. Slingers and bowmen would launch an opening salvo at the start of battle, picking off lightly armoured novices, before retreating. Following this, one or both of the armies would charge at the other, as the vanguards attempted to smash through one another’s lines – accompanied by standard bearers, conch blasts and…