The National Geographic Classic Collection range showcases some of National Geographic's most memorable programming. Each two-disc set brings together six programmes with a common theme - the perfect way to explore Nat Geo's incredible catalogue.

This 2 disc collection comprises:

SEARCH FOR BATTLESHIP BISMARCK: Almost half a century after its sinking in 1941, explorer and scientist Dr. Robert D. Ballard, discoverer of the Titanic, searches the Atlantic for the infamous Bismarck.

UNTOLD STORIES OF THE WORLD WAR TWO: Witness the daring attempts of undercover Norwegian resistance fighters to destroy the Nazis' atomic bomb program. Relive the surprise air and underwater attack on America's battleships in Pearl Harbour. Find out why kamikaze fighters, Japan's deadly weapons of destruction, would sacrifice themselves to destroy U.S. battleships and aircraft carriers.

CHURHCHILL'S GERMAN ARMY: This is the unknown story of the Germans who fought for Britain. They fought on all fronts and in some of the most infamous and bloody operations and if captured, they faced agonising torture and certain execution.

D-DAY: MEN: This is the story of the ordinary men who participated in the greatest amphibious invasion in history.

THE HUNT FOR HITLER: The FBI spent years tracking false leads and sightings of Hitler. The Russian soldiers who claimed to have found his body said they incinerated it then dumped the remains down a Berlin sewer. Without a body, can we really be sure what became of the man?

HITLER'S SKULL: Forensic scientist Mark Benecke investigates the death of Adolf Hitler analysing his alleged skull, his teeth and even the remains of his beautiful mistress, Eva Braun. These strange artefacts reveal many things for the first time - including how Hitler killed himself.

Also available in the Classic Collection range: World's Deadliest and English History