ok so as a result of some POD in the 1970is SSSR and USA go to al out war in the early 1980is
MAD goes as planed, tousands of megatons are exchanged
generaly this is where all calculations stop, thats basicaly it, evrione is considered as good as a statistic, most people go on to hipotesise living conditions and civil survival rates worldvide
but both superpowers still have a humongus arsenal of conventional weapons and a huge army equiped and trained for exactly this situation
so what hapens next
asuming the war is not somehow declared ower once the bombs fall, how would things develop strategicaly and tactically in the next several years