i found the issue; incidentally, the creator released the version with the working shotgunners the day after i downloaded the mod :P

the second one: i guess it automatically did it or something. once i added grenades to euro_elite and prussian_giant, it gave grenades to all the other grenadier units.

if i gave grenades to a non-grenade unit (such as sikh infantry or miltia, just as examples) would it let them use greandes, or would i also have to add the animation to them? if i have to add the animation, then screw it.