This includes any rough ground that might cause those attempting to cross it to struggle. This can include scrub, rocky ground, shallow streams or fords, even thick mud. Most woods will also count as difficult terrain.

If any part of a unit moves through difficult terrain, that unit suffers a -1 modifier to its Movement characteristic (to a minimum of 1). This modifier is applied whether the unit begins its movement in difficult terrain, passes through difficult terrain during its movement, or ends its movement in difficult terrain.

Should a unit charge through difficult terrain, it makes its Charge roll as normal by rolling 2D6, but must discard the highest result, rather than the lowest. Therefore, when charging through terrain, the lowest result is the result of the Charge roll.

Finally, a unit that ends its movement or begins a Combat phase with a quarter (25%) or more of its models within difficult terrain becomes Disrupted and cannot claim a Rank Bonus.