Units composed entirely of models with this special rule are allowed to make any number of Reforms when moving in the Remaining Moves subphase, while they may still Advance or March. They are allowed to shoot even if they Marched or Reformed. No model may move more than its Movement allowance (or twice that number if Marching), from its starting position to its final position, around any obstructions (including the Unit Spacing rule). If a model performed any action during the movement (such as Sweeping attacks), the distance moved is counted from its starting position to the point on the Battlefield where it performed that action and then to its final position.If more than half the models in a unit have the Light Troops special rule, the unit always counts as having 0 Full Ranks. Characters with Light Troops that are joined to units with one or more models without Light Troops, lose this rule for as long as it remains with the unit .