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Coleshill World War II bunker tells story of Auxiliers

15 September 2012 Last updated at 11:03 BST

A replica World War II bunker has opened in Oxfordshire telling the story of a secret unit of fighters.

The Auxiliers were Winston Churchill's guerrilla army, prepared to attack the Germans after a possible occupation of Britain.

The National Trust has built a replica of the original training site and bunker in Coleshill, which has opened to the public for the first time.