Neon serpent

I created many new units for my mod (mostly ships and aircraft), but computer opponent does not produce them. I tried to correct xml files SkirmishAI and personal, writing strategies and actions with new units (for example - a rush attack with frigates and corvettes, or a raid with stealth aircraft), but it only resulted in duplicating commanders. Can you explain how to write new units and their roles for AI?

Can you give instructions or a guide on how to replace the basic models in RA3? I downloaded a pack of models and doubled ship sizes using Blender, but integrating them into the mod using the MOD SDK turned out to be a problem. After putting the models in the appropriate folders (for example, "art/ju" in the SDK itself), nothing changed in my game except broken bones: nothing change but battleship turrets, dreadnought missiles, aircraft carrier doors, etc. are now located far from the ships themselves. After trying to make a separate folder inside the mod and specifying the paths to the models via "mod.XML", the program started to run into an error about a missing WB_data, or mod.manifest. Maybe I'm exporting the models incorrectly or should the folder structure be different?