It's derived from the comic book 'The Losers' by Andy Diggle, released by Vertigo, which also released V for Vendetta (graphic novel) and is under DC Comics.
"Members of an elite U.S. Special Forces unit are sent into the Bolivian jungle on a search and destroy mission. The team -- Clay, Jensen, Roque, Pooch and Cougar -- find themselves the target of a lethal betrayal instigated from inside by a powerful enemy known only as Max." Read More at Yahoo!
The Losers in theaters Friday, April 23