Dog Soldiers is a 2002 British horror film written and directed by Neil Marshall, and starring Kevin McKidd, Sean Pertwee and Liam Cunningham. The plot begins with a couple camping in the Scottish Highlands. The woman gives the man a silver letter opener as a present; shortly afterwards they are killed in their tent by an unseen assailant. Meanwhile, Private Cooper is seen running through a forest in North Wales. He attacks his pursuers, but is overwhelmed and wrestled to the ground. It turns out Cooper was trying to join a special forces unit, but fails when he refuses to shoot a dog in cold blood. He is returned to his unit by Captain Richard Ryan. Four weeks later a squad of six regular British Army soldiers, including Cooper, is dropped into the Scottish Highlands.