- Big-Lipped Alligator Moment: At the end of a big scene between the reporter and the heroine...
Paperboy: (From off-screen) Ex-tra, Pa-per, America invaded, read all about it! (Comes onscreen from behind the couple, stares openly at the couple, turns around, walks off-screen while repeating previous line.)note
- Follow the Leader: This was the basic script for American invasion paranoia films like Red Dawn (1984) and Homefront. John Milius probably saw this film and when he did, it was like Traffaut seeing Citizen Kane for the first time.
- Nightmare Fuel: For all the film's excessive Stock Footage, misplaced Patriotic Fervor, and misunderstanding of Nuclear Weapons, the imagery of familiar American landmarks being bombed-out and conquered by "The Enemy" is chilling...until the ridiculous All Just a Dream ending, at least.
- Values Dissonance: The whole film plays like a nativist masturbatory fantasy, filled with hysterical appeals to emotion (The old "THEY'LL COME FOR OUR WOMEN" chestnut appears in the last minutes of the dream) and backstabbing foreigners that are of course commie Double Agents. And most egregiously, the apparent Aesop that, in order to combat The Forces of Communism, one has to cede everything to the government to protect us...which the producers don't seem to understand is essentially Communism in practice.