The military hospital is a military building that can heal wounded troops after a battle. The hospital can contain a certain amount of troops who can be healed.You can build one hospital per castle.'soldiers who enter the hospital to be  injured in a fight where launched from the castle where existed a hospital'.You can unlock more slots and number of soldiers who can be deposed here increasing the level of the hospital. You need coins and sometimes rubies to heal the unit.You can ask the alliance to help heal 20% faster soldiers, 5 people must respond to this demand.You can build a military hospital in each kingdom, including the kingdoms of the events. Those events of the kingdoms are named,, field hospital '', they are operating like normal. All modernizations include rubies to field hospitals .You can't send healing requests to your alliance members on these hospitals.and they dont eat food when in hospital