I am looking for Fires-related analog product for our Battalion TOC. I cannot find much on the FKN, does anyone know of a better resource ?

I looked on the internet but couldn't find a FKN thing. ;)

Email the Wolf O/C's at NTC, they also have a sharepoint you can navigate to through AKO. They're your single best repository for Fires products.

FM 3-09.42 & FM 6-20-20 could be a useful starting point