It is possible to add AA to moving ships in Clod , see the below linked topic at Airwarfare by FG28_Kodiak , also note the entry by Gamekeeper which for those not into editing files will find an easier way.  Cheers to both for the info :)                                                                                                    CLICK ME FOR LINKAGE

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Front mount AA gun on moving transport ship

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Rear mount AA gun on moving transport ship