1. When the number of injured Troops exceeds the capacity limit of the Infirmary, the Enlistment Office will recruit some reserves to replace some of the Troops you've lost in battle.
2. Recruit from the reserve using Loyalty, it will start to accumulate again after using the reserve.
3. Factors affecting the rate: The lower the Loyalty is, the faster it accumulate. The fewer the severely injured in the Infirmary, the faster it accumulates. The more reserves (excluding reserves that can be enlisted immediately) in the Enlistment Office, the faster it accumulates. Please note, the Loyalty will stop increasing after reaching the limit.
4. You can obtain Loyalty by collecting rewards from daily missions or gathering if the reserve in the Enlistment Office is not empty. You will get more as your Furnace level increases.
5. The capacity of Enlistment Office is 4 times the Infirmary capacity.