Surreally, the barbed wire develops its own enveloping life, and a pile of cadavers slowly implodes like a failed soufflè. Visually, the film is striking, but monotonous: mud, mud, inglorious mud is all you see. The soldiers never remotely resemble people of their First World War period or class, simply today's F-ing yobs in khaki. Morally it's as blameworthy and trivial as that other bit of well-marketed zombie rubbish, 28 Days Later, both of them projecting physical repugnance in place of any psychological comment. A bad sign when debut directors, or even established ones like Danny Boyle, go scavangingin the B-picture morgues for their box-office audience.