RTF is a global modification that replaces all towns in the game.

That's right. Using a plugin for 3DS Max 2008, you can load the skeleton and animation. Or you can use the program (Noesis), which can also export animations to various formats (including FBX, SMD, PSK-PSA). This was discussed in the thread "Guide to adding a new model, animation, and creature to the HoMMV game" (on pages 22-24).

Vova, you helped me with this, but it was a year ago, and I've forgotten everything. Plus, it seems I deleted all these programs because I don't have them on my computer now...)))) And I don't remember which of these methods I used... Do you have a way to send them to me?

Added 17 minutes later
Hmm, I think I'm starting to remember. I downloaded Noesis and GR2 Tool... It does everything, but the FBX file is empty - why? This was also discussed back then, but I don't remember why yet