This number decreases as you take damage. How Many Successful Wounds a Model can Take Before being Killed in Battle. This Number is measured in cm. This is the Model's Basic Movement Distance. A unit equals any number of models within 5 cm of another model's base.
Units are variable in After Empire.
A unit can be combined or divided during its activation and movement. To divide or merge a unit, it must move into 5 cm of another model or at least 5 cm away. A single model may never leave a unit, unless it is a character figure. A character or vehicle may be it's own unit. The unit has become engaged in close combat.