In the years right before World War II started in 1939, Winston Churchill had been out of government. However, even though he was far from power, his country home, Chartwell, became Churchill's headquarters of his campaign against Nazi Germany. Catherine Carter is a curator and historian who has managed the house and collections at Chartwell. Her new book is called "Churchill's Citadel: Chartwell and the Gatherings Before the Storm." Catherine Carter reveals how Churchill used Chartwell, which is 35 miles from London, as his base during the pre-war years to collect key intelligence about Germany's preparation for war.

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