In April 1861, Union forces having lost the first battle of the Civil War, attention turned to the Confederacy's likely next target - Washington DC.

Entirely unprepared, the American capital was to be undefended for the next 12 days. To explore the fears, preparations and movements of these days, Don is joined by Tony Silber, author of 'Twelve Days: How the Union Nearly Lost Washington DC in the First Days of the Civil War'.

Produced by Sophie Gee. Edited by Aidan Lonergan. Senior Producer was Charlotte Long.

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