Large cities are fortified by walls, punctuated by towers and gates. The attacker must breach the fortifications during a siege battle to take the city, while the defender can man the walls in an attempt to stop them.
The attacker in a siege battle can use siege weapons to target areas on the walls or the gate.
The defender in a siege battle may position selected units on top of the walls by right-clicking.
An icon appears above towers and gates on the battlefield to show their current allegiance.
The missile fire of a controlled tower may be directed by left-clicking the icon above the tower and right-clicking the desired target.