Chronicles of the Graceful Knight
Unlike other guilds the Muster make their money off of labor, not the provision of goods. They are a large consortium of organized Human Resources. The core of the guild is almost always mercenary. They specialize in providing corps upon corps of trained men for an adequate cost. They serve to provide mercenaries to whoever can offer the highest amount.
The Muster is also the largest resource of unionized freemen labor, providing skilled (and unskilled) labor wherever it is required. The protection of these unions extends only as far as the members of the Muster. They serve to provide an elite service and are exclusive about who they hire.
However the Muster has been known to resort to “volunteered” labor (termed slavery by more liberal groups) when they find the buyer wants cheap, easy and unskilled labor. Although slavery is technically illegal in the Empire this does not prevent the muster from kidnapping peasants, freemen, barbarians and the occasional noble (sometimes deliberately for a nominal fee). Their slaves will often receive ‘therapy’ to help them re-adjust to their new lives (and condition them to forget their old). This trade in practice has earned them the nickname of “Chainers”.