The Galloper Gun is harnessed to a warhorse ridden by one of the gunners. This enables the Gun and its entire crew to move using the Warhorse's Movement as the remaining crew members are assumed to jump on the harness and hitch a lift. However, due to the weight of the Gun and the crew the Warhorse suffers -1 to its Movement value.
The Galloper Guns may march move.
If the galloper gun is charged, the crew may hold or flee with the Swiftstride special rule. If they flee, the gun is assumed to be limbered up immediately without any movement penalty.