I just come upon this particular (small?) website today which i think might be useful/helpful for add-on or mission makers alike. This-
It cataloged some*(i found only some for now, but maybe they might end up useful for some*:)) of the nation's armed services, their composition, their equipments, and maybe most useful imo; their except organization in each level, from fireteam, squad/section/combat group, to company and battalion.
I thanks to whoever run the site. I think maybe some of you here can have useful info on it, like i did with one of my imaginary scenario where i make French combat group by source of it (via AMF+R3F. Thanks to them all).