This is where your injured soldiers go to Heal. Upgrading this building increases the Infirmary capacity along with giving you a boost in power.
If your Infirmary fills up, your troops will start to die in battle.
The Healing speed can increase with Amane's skill.
Upgrading the Ward Expansion technology in the Growth tab of the Academy increases the capacity of your Infirmary, too. Researching Bandaging, also in the Growth tab, decreases Healing time.
