Social historian LIZZIE COLLINGHAM, author of the ground-breaking The Taste of War, explains how food and its delivery was critical to the conduct of WW2 - and could be a matter of life or death.

The music in this episode is from Ida Pinkert's 'Four Songs', played by the Nimrod Ensemble of Berlin as part of the Lebensmelodien project, which seeks to rediscover the lost music of composers affected by the Holocaust (www.lebensmelodien.com).