Need help with Call of Duty 2 modding Thread

Hi, I'm new here and I have a problem just like in the title. I'd like to start modding with Call of Duty 2 - I mean making campaign missions without any space ships or anything, just using basic textures and models from the game. And my problem is - Is there any way to export game files so I can see how to make scripts for campaign missions so I can see how it can be done or maybe there are examples on the internet? Because I've only seen some tutorial with radiant and making maps but except that I don't know what to do next. If someone who's on topic could help me It would be really great