>>96339547
I could be misremembering exact details here, but I remember flipping through an old set called "Bodycount" which I think had an option for multiplayer USA/ARVN vs GM or even "bot" NVA/VC (apologies for the /v-ism). Scored points from 'normal' objectives ("take that village" sort of thing) but also from getting confirmed kills with a body, mitigating point losses by successfully medevac-ing your casualties, that sort of thing. It's an old one, as in 'typewritten and stapled A5 booklet' old (Tabletop Games, I think?) but I remember some old boys at an old club saying they'd had some fun shenanigans with it.
No idea if it's still available outside of a bring and buy, and it goes without saying that it likely has no 'mod cons' in terms of gameplay and structure, but it's a name for you.