|If you mean military clan:|
Each map location is divided into 4 districts, each district - into 4 subdistricts.
Military clans gain 3% of all wages paid in facilities on any map subdistrict they control. If the MC controls an entire district (North, West, South, East subdistricts all at once), then the gain is 5%. If the MC controls an entire location (4 districts, or 16 subdistricts), then the gain is 7%.
They don't get any gold for items sold.