Sisters of Battle

Faith Resource
Faith is a resource with a maximum amount, current amount and income rate.

Once Martyr's Gift is unlocked, certain Sister infantry produce faith upon death. This is known as a death resource.

Sister units provide faith while they remain alive.

Maximum Faith
Sisters of Battle can upgrade up to Listening Posts with a Holy Icon. Each Holy Icon increases the maximum Faith by 20.

From the Holy Reliquary (Tier 2.5 ability structure) each Commander Health research also increases the maximum Faith by 20.

The maximum possible Faith is therefore 120.