The Mercenaries Guild is a continent spanning organization based mostly out of the 50 Baronies, but having guild halls in nearly every country of the known world, including the Tarnish Empire.
The Guild provides bonded merc's to who ever pays. Usually as caravan guards, but also as fully trained companies of specialists in martial warfare.
Several rules are standard to every bonded merc contract.
Bonded Merc's will not fight other bonded merc's and to try and force them to do so is a violation of the contract.
Bonded Merc's will not betray a contract
Unless the Contracted violates the contract Bonded Merc's will faithfully serve.
Bonded Mercs do not do Assassinations.
It is expensive to be a bonded merc. 50 gold per season on average.. 200 gp a year. But a Bonded merc can make 500 gp in a month with the right contract.
Bonded Merc's do not rape, pillage or harass civilians.