Disruption represents a unit having lost some of its cohesion. A unit becomes Disrupted if:

• It is engaged in the flank or rear by an enemy unit with a Unit Strength of five or more.

• It ends its movement with a quarter (25%) or more of its models within difficult terrain or if it is straddling a low linear obstacle.

A Disrupted unit cannot claim a Rank Bonus.

Note that enemy Skirmishers do not cause Disruption.