Found it
Behavior = AIUpdateInterface ModuleTag_03
AutoAcquireEnemiesWhenIdle = Yes ATTACK_BUILDINGS
AILuaEventsList = RohirrimFunctions
AttackPriority = AttackPriority_Cavalry
Turret
TurretTurnRate = 360 ; turn rate, in degrees per sec
ControlledWeaponSlots = PRIMARY
End
End