Soldier refers to multiple things, for the Soldier Profession see Soldier
The Soldier is pretty much the Tank in the party. They do the most damage and can take the most. The key word for Soldiers is LEADERSHIP. Soldiers are usually the leader of the party and will constly give orders as if they are the partys commanding officer, though it is not rare for a Soldier to be a backup for a weaker class.
Since the Soldier is a non magical class, instead of getting spells they get unique features only this class can posess.
Mason Gloria Frost- Super Soldier
Elanor Frost- Soldier