I-4: Loafing and Camouflage(2008)

Morons on a mission? Impossible.

A group of new recruits, each of whom, for their own reasons, wants to be exempted from military service, is forced to serve as I4. The group finds itself on a remote island with a specific mission: they must play the role of "hares" and coexist with the locals who are preparing for a major exercise.