Coordinated volleys from multiple arquebusiers could pin down entire enemy units, forcing them to take cover or advance through a hail of lead and crossbow bolts. This suppressing fire allowed the pike square to maneuver or charge unmolested.

Prerequisites: Landsknecht Sharpshooter, BAB 6+

Benefit:

You can only use this feat with weapons from the Crossbows or Firearms weapon group.