Land of Legends
The Mercenary Guild was designed to hold bonds on the conduct of mercenaries and act as a neutral arbiter in case of disputes. Members are required to pay dues for the services of the guild and adhere to a set of rules on conduct, in return they are less likely to give up on a job without due cause and if the contractor should decide they need not pay the guild can censure them. Guild mercenaries are much more sought after and reliable then none guild mercenaries for those actually willing to pay.
Mercenary companies also exist and enjoy most of the same benefits and duties as freelancers. However guild mercenary companies often act as specialists in methods of war that are to costly for standing armies: Sappers, Skirmishers, Scouts, Horse Archers, and Combat Engineers.