In reply to Mako (msg # 464):
Army Challenge Rating (ACR): This is based on the CR of an individual unit from the army and the army’s size, and scales like CRs for monsters. To determine ACR, see Table: Army Sizes and apply the modifier for the army’s size to the CR of an individual unit in the army. If an army is cavalry, use the mount’s CR or the rider’s CR, whichever is higher. For example, an individual orc warrior 1 is CR 1/3, so an army of 100 orc warriors 1 is ACR 1/3; an army of 500 orc warriors 1 is ACR 3 (4 steps greater than the standard 100-unit army). If a group’s ACR would be lower than 1/8, it doesn’t count as an army—add more troops until you reach an ACR of 1/8 or higher.
Edit:
https://www.d20pfsrd.com/gamem...r-rules/mass-combat/ For more reading.
This message was last edited by the player at 08:57, Sat 25 Apr 2020.