Movement  No movement restrictions for foot units, except war machine units, which may not enter a broken ground hex. A mounted unit must stop when it enters a broken ground hex and move no further on that turn. 
Battle A foot unit may battle the turn it moves onto a hex with broken ground. A mounted unit may not battle the turn it enters a broken ground hex. 
Close Combat When your unit battles an enemy unit on a broken ground hex or your unit is on a broken ground hex and battles out, it will roll a maximum of 2 dice in close combat.
Range Combat When your unit targets an enemy unit on a broken ground hex with range combat it will roll its normal battle dice, when your unit is on a broken ground hex and battles with range weapons it will battle with normal dice. battle with normal dice. 
A Command card that adds additional dice in battle will modify the maximum number of battle dice that may be rolled.
Line of Sight Broken ground does not block line of sight.