It was based on the 1958 short story Expect the Vandals by Philip Roth.

[2] Filmgroup released the film, as a double feature with Ski Troop Attack.

Roger Corman appears at the end of the movie as an American soldier.

Corman put up $31,129.31 of the budget with $14,000 provided by Stan Bickman and Joel Rapp.

The movie was shot in Puerto Rico at the same time as two other Corman productions: Last Woman on Earth and Creature from the Haunted Sea.