Dir. Stanley Kubrick
Opening with multiple future-marine grunt's heads being sheared, Kubrick establishes his theme of de-humanization by the military machine. Over and over again in the film the individual is de-emphasized and punished. At the end, when all innocence has been lost (symbolically represented by the pre-pubescent girl sniper) all the marines march together, shadows against flame. They whistle the mickey-mouse club theme in unison. Personality burned away until they are perfect copies of one-another.