Hasbro
The Cannons add a special Attack that Destructible Objects do not roll defense dice against.
Cannons are obstacles. Instead of attacking normally, a figure that is adjacent to a cannon and is not engaged may rotate the cannon on its space, then perform a Cannon Fire Special Attack, measure line of sight from the barrel of the cannon. Each Cannon may only be used to make a Cannon Fire Special Attack once per player turn.
CANNON FIRE SPECIAL ATTACK
RANGE 8 ATTACK 3 EXPLOSION 1
Destructible Objects never roll defense dice against Cannon Fire Special Attack
Roads add +3 movement to units that have their entire movement on road.