Not the macho fantasy 4/10 tacticool movies filled with healthy, muscled people.
Threads may be the best. It’s horrifying to the point of being almost unwatchable, from the burned and mutilated people to kids missing noses to the disfigured traffic warden to survivors wandering around half blind with cataracts.
The entire thing is awful and depressing. Same with the other two. Threads stands out because the government maintains order under a realistically brutish feudal system.
Contrast with the fun but stupid Dawn of the Dead remake where they leave behind a mall and fully stocked gun store to go to an island that plausibly would have been overrun.