Frateris Militia

This is just about the most fervent enemy a potential heretic can fight.

EMPEROR DELIVER US!!
The Frateris Militia is no more than a bunch of armed Imperial citizens who go about and fight against heretics out of pure zeal. These militia parties are considered highly dangerous to both friend and foe, as they tend to pave through innocents on their way to the heretics.

BIBLE THUUUUMP!!
While not too heavily armored in civilian clothes and robes, the Frateris Militia are armed with various weapons from Flamers to Laspistols. Fighting one is always easy, fighting a horde of them is a challenge. These warriors of faith know no fear, and by the Emperor they'll kill you or take you with them.

BUT CHAOS IS COOLIO!
Fighting a band of Frateris Militia isn't much of a challenge depending on the size. If there's very few, it's a snap, but a large horde is basically the same as an Ork WAAAGH of faith. Coordinate your efforts where possible, as there's no real strategy to taking on a motley crew of deranged zealots.