The Field Hospital
The Field Hospital 
is a location node in Darkest Dungeon II. It serves as a rest point where the player can heal from the rigors of the road as well as cure their party's afflictions, both physical and mental.
The Hospital provides 3 services; The Clinic, Wellness, and Pharmacy.
Clinic
The clinic is where you can spend relics 
to heal your party for both their diseases and their health. If a hero has a disease, an option to heal the disease is presented on that hero's page, for a nominal fee. Some diseases cost more than others to heal, but generally fall under 8-16 Relics. As well, you can heal your heroes physical health, with an option to heal partially or fully. This can cost anywhere from 1 relic to near full health bars for a handful.
Wellness
The Wellness page is where you can remove and lock in quirks. Any quirks 
can be removed from heroes for 16 Relics , while Positive quirks
can be locked in for 32 relics .
Pharmacy
The Pharmacy acts as a store just like The Hoarder and Inn stores. It sells a mostly defensive and healing based stock.
They can sell Antivenom, Bandages, Burn Salve, Holy Water, Laudanum, Medicinal Herbs, Restorative Herbs, Milk Soaked Linen, Invigorating Intoxicant, Clotting Powders, Ablative Powders, Neutralizing Powders, Clotting Poultices, Impermeable Poultices, and Soothing Poultices.