Combat

After the conch shell sounds the call to arms, warriors of both factions collide in the middle of a battlefield situated outside the city. Each warrior attacks his opponent with a mace, the main weapon of the Moche culture. Many of the wooden maces found in excavations were originally covered with copper, gold or bronze sheet. The main objective of combat appears to have been the capture of high-ranking prisoners for sacrifice on ceremonial occasions.

https://www.academia.edu/1222402/Reconstructing_the_Pre-Columbian_World

http://coricancha.deviantart.com/art/Moche-Combat-AD-300-450-436837771