When charging, units entirely made of models with Swiftstride and M 7 or higher roll 3D6, discard the lowest result, and add the result to their M value. When fleeing or pursuing, they roll 3D6, and discard the lowest result.
When charging, units entirely made of models with Swiftstride and M 6 or lower roll 2D6, and add the result to their M value. When fleeing or pursuing, they roll 2D6.
Swiftstride M6 or lower
Charging: M + 2D6
Failed Charge: 2D6
Fleeing/Pursuing: 2D6
Swiftstride M7 or more
Charging: M + 3D6 (discard the lowest)
Failed Charge: 3D6 (discard the lowest)
Fleeing/Pursuing: 3D6 (discard the lowest)