Before you guys go re-inventing the wheel:
Stock game
\SH4Stock \Campaigns \Campaign \Jap_CoastalBattery.mis
-and-
\SH4Stock \Campaigns \CampaignGE \CampaignData \Allies_CoastalBattery.mis
You can definitely tell that they were "in a rush" to get v1.5 out, since there are not very many guns placed, and none around Australia...