A tangent. In the 80s with the threat of the Cold War going very hot for about 15 minutes, there was this game, Twilight 2000. Your characters were the remains of an American offensive into Poland, trying to cross a less apocalyptic wasteland where every jerry can and magazine was a fortune to get… home, maybe?
An awesome setup. Perhaps because of the underlying horror this would actually be, EVERYONE seemed to think of it as strapping all the gear aboard an M1A1 and roadtripping to Gdańsk.