Currently, there is no way to check/change the strength of the Archers and the attack for the Ballista and the Turrets.
Note: The values for Turrets are automatically calculated based on the value for the Ballista.
*
GetAttackBallista(town)
SetAttackBallista(town, quantity)
AddAttackBallista(town, quantity, duration)
RemoveAttackBallista(town, quantity, duration)
GetArchersStrengthBallista(town)
SetArchersStrengthBallista(town, quantity)
AddArchersStrengthBallista(town, quantity, duration)
RemoveArchersStrengthBallista(town, quantity, duration)