The protectorate force established as a marriage of forces between the humanoids huddled at the edge of Underchasm.
Comprised of humans, elves, dwarves, halflings and even goblinoids, they fights the common foe seething in the depths of the darkness below.
As a formal military their organization is a merger of dwarven and human methods with labels and definitions in a mishmash of Shaartan dialects (common for the region).
Servicemen are either employed and paid by the kingdom or supported by houses / clans who may receive a monthly payment for their soldier, although most refuse to receive the monies as a point of honour.
It is considered a privilege to put your life to service in the Iron Guard, and members of the corps are treated with dignity throughout the kingdom, even in cases where racisms may push patience.