Artillery Module Creating and Removing

[flyingsaucerinvasion 3]

In a script, when creating an artillery module, do you need to create a new group for every artillery module?  Or can they all belong to the same group?

 

How do you remove an artillery module?  deleteVehicle? 

 

Is there a way to get the unit that an artillery module is synchronized to?

 

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One unrelated question.  Are arrays automatically removed from memory when no references to them remain?