Mark Wahlberg stars as Navy SEAL Marcus Luttrell (on whose account this film is based) in an intense movie that delivers an unflinching view of warfare.

Luttrell, along with team commander Michael Murphy (Taylor Kitsch), communications specialist Danny Dietz (Emile Hirsch) and sniper Matt Axelson (Ben Foster), is sent into hostile terrain to locate a Taliban commander.

But the team’s location is discovered and they are plunged into a ferocious firefight against overwhelming odds.

Writer-director Peter Berg doesn’t linger much over characterisation, but the bone-breaking, gut-wrenching, nerve-shattering action has immense impact.